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Spider Photos - Sac Spiders

Here's some photos of Sac spiders. Click here for a report on a bite by a sac spider. Many thanks for allowing us to use the photos sent in. All photos are copyright to their owners and may not be reproduced without permission. Please choose a section.
Unidentified Spiders 2014 Unidentified Spiders 2013 Unidentified Spiders 2012
Unidentified Spiders 2011 Unidentified Spiders 2010 Unidentified Spiders 2009 (1)
Unidentified Spiders 2009 (2) Unidentified Spiders 2008 (1) Unidentified Spiders 2008 (2)
Unidentified Spiders 2007 (1) Unidentified Spiders 2007 (2) Unidentified Spiders 2007 (3)
Unidentified Spiders 2006 (1) Unidentified Spiders 2006 (2) Unidentified Spiders 2006 (3)
Unidentified Spiders 2005 (2) Unidentified Spiders 2005 (3) Unidentified Spiders 2005 (1)
Unidentified Spiders 2004 (1) Unidentified Spiders 2004 (2) Unidentified Spiders 2003
Unidentified Spiders 2002 Unidentified Spiders 2001  
Spiders in Amber Closeups Ant & Wasp Mimicking Spiders
Argiopes/St. Andrew's Cross Barn Funnel Weaving Spider Basilica  Spiders
Bird Dropping Spiders Black House Spiders Bolas Spiders
Brown Recluse Spiders Candy Stripe Spiders Common House Spider
Crab Spiders Cyclosa Conica Daddy Long Legs
Daring Jumping Spiders Fishing Spiders Funnel Web (Aus)
Furrow Spider Garden Orb Weavers Giant House Spider
Golden Orb Weavers Grass spiders/Funnel Weavers Ground Spiders
Hacklemesh Weavers Hobo Spiders Huntsman Spiders
Jewelled Spiders Jumping Spiders Ladybird Spiders
Leaf Curling Spiders Long Jawed Orb Weavers Lynx Spiders
Marbled Orb Weavers Micarathena Mouse Spiders
Mygalomorphs Net casting Spider Nursery Web Spiders
Parson Spiders Pirate Spiders Pseudoscorpion
Purseweb Spider Redback Spiders Red Spotted Ant Mimic Spiders
Running Crab Spiders Scorpion Spiders Segestria Florentina
Solfugids/Camel Spiders Southern House Spiders Spider Tats
Spitting Spiders Steatoda Tailless Whip Scorpions
Tarantulas Trapdoor Spiders Venusta Orchard Spiders
Wandering Spiders

White Tailed Spiders

Widow Spiders
Wolf Spiders Woodlouse Hunters Yellow & Broad faced Sac Spiders
Zoropsis spinimana    
Yellow Sac Spiders Broad Faced Sac Spiders

YELLOW SAC SPIDERS
Cheiracanthium punctorium

The venom of sac spiders contains a cytotoxin—which means it kills cells—like the venom of a brown recluse. Unlike brown recluse bites which can take 2-3 months to heal, most sac spider bites heal much more quickly, although the reaction will vary greatly from individual to individual. Typical symptoms of a sac spider bite include a stinging sensation followed by redness and mild swelling. In a few cases, the bite may blister and break, leaving a sore that can take several weeks to heal. Sometimes the person will feel mildly ill. Sac spiders belong to the genus Cheiracanthium and the family Clubionidae. They are quite small and easy to overlook—about 1/4 - 3/8 inch long, with no conspicuous markings. The front legs are longer than the other three pairs. Sac spiders are quite pale. A common house species, the yellow sac spider is pale greenish, tan or straw coloured. Other sac spiders are light brown. Sac spiders typically have darker mouthparts and a faint dark stripe running lengthwise down the abdomen. Normally, these are outdoor spiders, but sac spiders often invade structures. Their numbers increase significantly in the fall when the weather turns cool and their food supply disappears. If there are small insects available, sac spiders can become established indoors. At night, sac spiders actively hunt their prey—usually small insects. In search of prey, they run quickly waving their forelegs before them. Indoors, they can be observed on walls and ceilings, but drop to the floor to seek cover when disturbed. Sac spiders construct a silken tube or sac in a protected area, such as within a leaf, under landscape timbers or logs, or at the junction of a wall and ceiling, and they use this sac as their daytime retreat. This is how the sac spider gets its name. These spiders do not build webs. After mating, females lay 30 to 48 eggs and cover them in a thin coat of loosely spun silk. The small, white, paper-like sacs are often found in easily overlooked locations, along ceilings and corners, or behind pictures and shelves. The female may guard these egg sacs and may produce several egg masses during her lifetime. Inspect for sac spiders by looking for sacs in upper corners of rooms, ceilings, behind pictures, on window moulding, blinds or curtains. During the day, sac spiders may be inside these sacs so vacuuming is an excellent method of control. Remove and discard vacuum cleaner bags to prevent reinfestation.

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Reply: Probably a yellow sac spider although it doesn't look all that yellow in this pic -  glen

10  August, 2013 :
We have found 2 of these spiders in our home that I haven't seen before so was wondering if you could help with identifying it. Thank you for any help you can give. Art

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Reply: Yellow Sac spider, like all spiders, they can bite - glen

10  August, 2013 :
Found this spider in a pile of clothes on the floor. Picked up my clothes and it fell off. I Live in CA. What is it and does it bite?

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16 June, 2013:
Hello: Does this look like a yellow sac spider? We've seen quite a few of these in the corners of our ceilings this spring. Thanks. Bill

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16 June, 2013:
Glen, I've been finding these around my new apartment. After doing some research on them on your website, they appear to be a Yellow Sac spider (http://www.spiderzrule.com/sac.htm) but I could be wrong. Let me know what you think! Thank you very much!

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16 June, 2013:
Found in NJ inside my house. Brownish tan colors

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16 June, 2013:
I found another one in the basement. Is it the same thing?

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16 June, 2013:
Found in San Diego, outside, and no visible web. Please help!!

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16 June, 2013:
Hi, any idea what kind of spider this is? It is in my house (quite a few of them....probably a few in each room, up in the nook where wall and ceiling meet). I live in Minnesota, USA. They aren't around in winter but now that it's spring, they are out again. They don't spin the typical webs but leave fuzzy silks that hang down from the ceiling or across the wall/ceiling corners. Thanks!

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16 June, 2013:
Hi Glen: I found this spider on my grill, hanging out and barely moving although I just moved the grilling utensil right next to it. I has a big green sac with some sort of a transparent and cloudy cover over it. I didnt see a spider web (the grill has been uncovered for a few days now). I am located in Salem MA USA. Thanks, JP

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1 April, 2013:
For the past month I have been seeing these spiders in my house and I'm not sure what it is.

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6 March, 2013:
Hi, Glen! Thanks to your wonderful site, I was able to ID this gal when I accidentally came across her in a shrub out front. I noticed you didn't have many pictures of the sac spiders in their sacs, so I thought it would be worthwhile to send this one in. Sorry the quality isn't great, I was using my cellphone. -Echo

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Reply: It looks like a yellow sac spider and they can be dangerous - glen

6 March, 2013:
Hello I am interested in identifying the spider in the attached photo. I have found many of these spiders in my home. I live on Long Island in New York and I have found these spiders several each week in the house since September. I am concerned because I have an 8 month old in the house. Thank you for your help Ann

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14 January, 2013:
Hi Glen, this website is wonderful...thanks so much for the information! Last night I found the second sac spider (I am pretty sure) in about 3 weeks, in separate areas of my house. I was hoping it was just a fluke when it was just the one at first. I see so many conflicting stories about how dangerous their bite can be. Should I be worried? I have included a picture of the second visitor. Thanks again, Lacy

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25 September, 2012:
Hi, I wonder if you could identify this spider for me? http://bit.ly/RIIkkw Details about the spider: 1) About an inch long 2) Found in Slovenia, western Europe 3) Found in the middle of summer in 35 degree heat, after a long dry spell, at an altitude of 1000m, in a old barn used to store wood. No sign of a web. Cheers, Andy

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25 September, 2012:
Pic was taken in Voorhees NJ (southern New Jersey )

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25 September, 2012:
Ok I just about peed my pants but I got a couple clear pictures hopefully now you can tell me what it is,I hope they don't bite I'm afraid to sleep:(

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25 September, 2012:
What is this?

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Reply: Looks like  yellow sac spider too - glen

20 August, 2012:
Hi Glen, I got more photos of our orbweaver guest. she sure has grown. she is now 1 cm long and still living above our shower quite peacefully. and though we are still finding the odd yellow sac spider, we have noticed less of them since she has been here, but the ones ive seen have been HUGE like the one in the photo i am sending. she was too big for my liking. she got caught in a cup and put outside, but our orbweaver buddy is still living in our bathroom. sometimes i gently mist her web to give her some water. shes got some very pretty markings on her, i cant wait to see how she looks as she grows more, but my husband says soon she will have to be put outside because she is getting big. i will miss her, shes a very well mannered spider. sits in her web, catches our fruit flies and minds her own business. these sac spiders are rude company, they scurry across your ceiling or fall on you! ive had one fall on my face and scare the pants off of me! feel free to use them if you want to, its up to you. first two are the same yellow sac spider, one with flash one without. and the other is our orbweaver friend named Icky. Casey

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Reply: Looks like  yellow sac spider too - glen

25 June, 2012:
i! I was trying to do a little research about a spider I recently found in my living room. I'm just concerned because I've never seen this kind of spider. I'm sure it's just a common harmless house spider, but I wanted to be sure. I was bitten by what I believe to be this spider 1 day ago while sitting on an old couch I recently drug out of the garage, and I think I'm having an allergic reaction to it. The site of the bite is a raised white welt and the skin surrounding it is red, very swollen and painful. I don't think there are any dangerous spiders where I live (southeast South Dakota, US) but I wanted to be sure. It's about 8-10mm long not counting the legs, and brown, with a dark brown spot on it's lower half from what I can tell. This is the best picture I was able to get. Sorry if it's not helpful...! Thanks so much! -Aimee

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Reply: Looks like  yellow sac spider o - glen

25 June, 2012:
Hi Glen, I've contacted you before regarding spider identification, and you and your site have been very helpful, so I thought I'd run this one by you. After looking close at the photos, it appears to be yellow sac. Moves quick and medium size. First spotted it running across the t.v. late at night, then later located it on the ceiling... running in large circles around the ceiling light. The eye pattern seems to very much resemble yellow sac. What do you think? Many thanks, -Jeff

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Reply: Yes it is a  yellow sac spider o - glen

19 June, 2012:
Hi Glen: LOVE your site. I found this little character in the kitchen. Is it a yellow sack? Thanks Ian

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Reply: I think it is a yellow sac spider - glen

19 June, 2012:
I found this guy in my bathroom and I'm worried that he's a yellow sac spider. Also found 4 or 5 strange webs around my house. Is it an infestation?

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Reply: This one is a  yellow sac spider too - glen

15 May, 2012:
Good morning, I came across your website and was hoping you could help me with identifying a species of spider which has infested our home in the last several months. My roommates & I have not been bitten yet (that we are aware of) however, I do not want to take any chances. Our location is southern Canada/Great Lakes region of North America. Please see the attached photo in this message; I look forward to hearing from you! Thanks, Graham

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Reply: This one is a  yellow sac spider - glen

7 May, 2012:
Hi Glen, I found these spiders and have good guesses in what they might be. Would they be yellow sac on the top and wolf spider on the bottom? I found the spider on the top in my bathroom on the ceiling. There are more like it but don't all look exactly the same. The spider on the bottom I found in my strawberry patch. The day before I found this same exact type of spider with a white egg sac attached to her abdomen. Thanks for looking!!! Cristina

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Reply: This looks like a yellow sac spider, their venom can cause bad reactions - glen

15 April, 2012:
Hi, I hope you can help me identify this spider. It is a pretty common one in my home. My daughter was bit by a spider last summer and almost lost a couple fingers due to infection. We believe it was this kind. I was also wondering if you could give advice on where I can take it to be officially identified. I can try to get a better picture if this one does not work. Thank you, Julie

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23 December, 2011:
Hi Glen. Your site has been very helpful, as my wife and I found the spider in the attached photo in our house in Central Wisconsin, near Oshkosh. We are very concerned that it may be a Brown Recluse. The damage that they can do is very alarming. We have scoured the Internet looking for pictures and ways to identify a Brown Recluse and have learned that many of them look very different. I only have this one image and I killed it immediately after, as it looked like nothing I’ve ever seen before in my life, it just looked menacing! Could this be a southern house spider, and not a Brown Recluse? From what we have learned, the determining factor would be counting its eyes (six not eight). I did not have the opportunity to count its eyes as I went into kill mode. Are southern house spiders nocturnal, as well? This spider appeared at 1am. Thank you very much for your help. We are very nervous. William

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23 December, 2011:
I have killed this one and another similar looking spider within the past 2 weeks. Could you perhaps help and let me know what kind of spider you think it could be? I think that it might be a young brown recluse, and if so we need to call in some pest control ASAP. Thank you in advance for you help, and please feel free to use this on your web site.

 

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20 November, 2011:
Hi Glen! In June, you helped me identify a giant spider I found in my New York City apartment after leaving a bathroom window open while I was on vacation; it was a yellow sac spider, which I had never heard of before despite their dangerous bites. Since then, I don't open my bathroom window at all but I have been finding baby yellow sac spiders in small sacs around my bedroom window moulding; they were small enough to get in through the screen. I got rid of them as I found them and haven't seen any in weeks. When I got in the shower this morning, I found this guy fighting to not get sucked down the drain. I put him in a plastic bag and took pictures (he hates me now). He seems to be very aggressive. His eyes look weird and his abdomen only looks yellow in pictures where I have shined a flashlight directly on it. Is this also a yellow sac spider? His abdomen is much smaller in relation to his body than the other one that I found. I am TERRIFIED of these things. Please let me know what you think (as quickly as you can, please, because he is staring at me right now). Thank you! Shannon (I have also included a photo of the spider that I found in June)

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22 October, 2011:
Hi glen- We haver been finding these in our house and with a toddler running around we dont want to risk anything. We are staying with relatives until we get confirmation on what type of spider this is. We are in omaha, ne. Thank you ! Aliso

 

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9 October, 2011:
I was wondering is you could identify the spider I captured. I've never ran across one that looked quite like this, the legs are a faint green/yellow color with black/brown at the tip of each leg. Thanks a lot.

 

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4 August, 2011:
shes a sac spider, shes made a little sac in the ketchup cup now and is resting in it. that mottling only shows up in natural lighting, in the house lighting you cant see it much. i have a few photos of her from before we caught her. shes around 5mm (1cm-ish) sorry got that size wrong lol the second photo, im not sure what spider this is, dont know if its IDable from the poor shot, but the egg sac was funny. for her 500mL jar i will add a few sticks for her to climb and give her a more enriching home

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24 June, 2011:
Hi Glen, I found this spider in my kids bathroom. It made white sac overnight on top of a bag prepared for swimming pool. I am from San Francisco Bay Area. I assume it is some type of sac spider. Can you identify it for me, please? I have 2 small kids, they love to explore new things, especially bugs. Is this spider venomous? Thank you, Tatyana.

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4 June, 2011:
I live in the cleveland, ohio area. We had an exterminator spray for ants a week ago and now within the last 24 hours I've seen 5 of these spiders, 3 of which were in my 5 month old's room. Please let me know if these are something to be worried about! Thank you, Jamie

 

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16 May, 2011:
We have been finding these spiders all over our house and getting small bites. Sorry about the bad picture it was the best we could take. There are anywhere from 3-8 of these found on the walls daily. We live in Northwest Ohio. Please let us know what kind of spider we are dealing with. Thank you

 Click for a larger view.

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16 May, 2011:
I am Manohar from India studying on spiders in Bt cotton ecosystem. Please identify these species .I hope there is positive response from your side. Thanking u Manohar

 Click for a larger view.

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Reply: This looks like a yellow sac spider.

27 April, 2011:
Hi. I found this spider on my family room wall this morning. I have seen 3 or 4 of these spiders in my home over the last week or so. I am terrified of spiders as it is, but not knowing what kind of spider this is is a nightmare for me. I live with 4 other people and have 7 pets so I am very scared that this spider might be harmful to my family and animals. Thank you for helping to identify it. Im sorry the picture isn't too clear, I was afraid to get close to it. It was about the size of a quarter and had a light tan coloration. Thank you again for your help!

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Reply: This looks like a yellow sac spider so be careful.

12 April, 2011:
Hi Glen, I just checked out your website and thought I would email you. I have these spiders in my house and I want to know what they are and how to get rid of them. I usually find one at a time in the bathroom (once while showering!!!) or the kitchen. They are about the size of a dime including the legs, not super fast, and I don't see any webs. I live in north central missouri and they've been appearing over the last month or so. I appreciate any help or advice you can offer. Thanks! Let me know if you need more info.

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Reply: This looks like a yellow sac spider.

28 February, 2011:
Hello! I,m an amateur photographer and the owner of blog http://pk-photography.blogspot.com , where I post my pictures with brief description. Here are some pictures of spiders. Any help in identification will be highly appreciated. The pictures are taken in Pakistan. Regards Muhammad

Click for a larger view

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Reply: This looks like a yellow sac spider.

12 November, 2010:
I live in southern NJ. I have seen a few of these, mainly at night after flipping on the lights. This is one I saw when I was pulling out my winter sweaters from the closet… pictures attached. -Dan

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Reply: This looks like a yellow sac spider.

7 November, 2010:
Hello- We recently found this in our house in northern california. The leg-span was about 1.25-1.5 inches long (front to back), the side to side was certainly narrower, probably .75 inches. The picture was taken on a door frame, but not quite exactly "overhead", but actually taken slightly from the right side looking down at the spider. Can you identify if this is a recluse spider, and if so, what type it is? We frequently get spiders, but usually much darker and somewhat smaller than this. This one scared me a bit. If we found one like this, is it likely we have several others? THANKS IN ADVANCE! Great web page. Matt Click for a larger view

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Reply: This looks like a male yellow sac spider.

4 October, 2010:
could u pls tell me wha type of spider this is we live in savannah ga and i dont want to sleep not knowing if dangerous ty

Click for a larger view

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Reply: What great photos!! Yes, this looks like Cheiracanthium punctorium - the yellow sac spider.
2 October, 2010:
hi! can u identify these male and female spider as Cheiracanthium punctorium? http://www.flickr.com/photos/shootingnik greets, u also can use the pics on the webpage, greetings from austria,
Nikolaus

Click for a larger view.

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Reply: This looks like a yellow sac spider.
12 September, 2010:

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Reply: No 4 looks like a yellow sac spider.

22 June, 2010:
Hi Glen, I came across this spider sitting on top of my car late at night in Santa Cruz, CA. I was stunned at how white it was. It had no markings on its belly or back of any kind. I believe it may have fallen on my car since I was parked underneath a palm tree, and the dew around it looked slightly disturbed like it may have fallen onto the car rather than crawling onto the car. I would say it was about the same size as an average black widow. Do you think you can let me know what this is? Thanks Glen. Julie

Click for a larger view

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Reply: It looks like a yellow sac spider.

11May, 2010:
I was wondering if you could help me out. I have been randomly finding these spiders around my house since the beginning of spring and haven't been able to figure out what kind they are. At least 1 every other day or so. This guy was hanging out on my roll of paper towels and actually let me take a few pictures. I just want to make sure they're not dangerous. The first pic shows his size in relation the the roll of towels and the second is a close up. They've got almost a translucent looking off-white color. Thanks!

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Reply: No 4 looks like a yellow sac spider.

3 May, 2010:
Hi! I have a few more spiders I've taken pics of that I was wondering if you can identify. I'm sure you're a busy person, so don't feel obligated to get to them quickly---just whenever you can. Thanks so much! 1: I have no idea 2: This one was super small---kind of orange-y red and had indents on its abdomen, which I found interesting. It's on the lip of a jar, so you can see how small it is. 3. This one had the long leg hairs of a lynx, but wasn't sure?? 4. I thought this one was a lynx....the light coloring and leg hairs 5. A crab? This one's missing a leg, but I wasn't sure if it was a crab because the front legs are usually longer, right? And this one's 2nd leg seems longer, so I don't know. Anyway, thanks again. :) Danna

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24 April, 2010:
Yellow Sac Spiders (two individuals) one was inside my house on the front door and the other outside near the front door on the siding. All pictures taken by me in southern NJ and free for anyone to use. - Laura Lee

Nice pics, thanks, click for a larger view - glen

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Reply: This is a yellow sac spider and can be medically significant. I have had a lot of photos of these recently - glen

24 April, 2010:
Please help me understand what kind of spider this is...we have just moved to Virginia and keep finding these in the house...Thanks!

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5 April, 2010:
I live on Long Island. I have these light colored spiders (yellow or green) that have infested my truck. I can't seem to get rid of them. I don't even know what kind of spiders they are. I used to park under a tree alot and I stopped that and figured they'd die over the winter. But all of a sudden they're back. Any suggestions or ideas?

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17 March, 2010:

Good afternoon, my name is Amanda. I have enclosed a foto of a spider I found in my closet last night. I wanted to find out what type it was or if it was dangerous at all and stumbled upon your site. Great site by the way! I've been on it for the past hour looking at fotos. The spider is nothing exciting but I find the color strange. Is it just some sort of house spider? Thank you for your time*~*Amanda
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Reply: This looks like a yellow sac spider and they can be medically significant - glen

23 October, 2009:
Hey, I live in Cleveland, OH and recently found an albino spider in my room. My backyard is the Cuyahoga Valley National Park so it's very common to see a lot of spiders in the fall, but not once have I ever seen an albino spider. I tried to look up information about them and got nothing. There are no venomous spiders, that I know of, in Ohio so I don't think it's a rare species. I have some great pictures of it that I attatched to this email, I had to make the pic smaller to send it but if you're able to, zoom in to see the transparency of the spider. If you know anything, could you please help me identify it? Thanks, Kara

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5 September, 2009:

Hello, I love your site! I started taking pictures of spiders in my house after my one year old son started getting what I think are yellow sac spider bites. (Lymph filled blisters that rupture and take months to heal.) So far your site has helped me identify 5 out of 6 of the spiders I've found (including what I think is a yellow sac), and now I know which are safe enough to catch and release, and which aren't worth the risk (lest they escape and bite my son again). Except for the nursery web spider who's picture was taken a few years ago (the most photogenic of them all, and thanks to your site I know they're not dangerous), all the spiders I caught were no bigger than a 1/3 of an inch...  All the spiders I've photographed are from southern New Jersey. Please let me know if I've grossly misidentified any of my spiders. Feel free to post any pictures you like and thanks for making such a great site! -Laura Lee
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13 July, 2009:
Hello Glen, I ran across your page while trying to identify this spider that I found on a plant in my living room. You can really zoom in on the detail in this pic. Any ideas what it may be? I live in New Jersey, and the spider was found in the springtime. I’d love to hear back. Thanks, Roland

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9 June, 2009:
Hi there! I live in Massachusetts, and stumbled across this spider a few days ago in my kitchen window. To get a sense of its size, it's sitting on one of the slats of a Venetian blind; I think the slat is an inch long. Many thanks! Michael :) p.s. and for the record, I *didn't* kill it!

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Reply: Yes I agree it does look like a yellow sac spider and this is the sort of web it makes. Click for a larger view. glen
18 May, 2008:

first off i like to complement you on your great page. its very imformative and fun! I was hoping you could help me out. the past few weeks since the weather had been getting warmer i have been find one to three of these little freeloaders in my houes. i live in southeast michigan very close to lake erie. I decided to do a bit of research to find out what they are and I am thinking they might be yellow sac spiders. but they are not yellow. more a browmish grey. my biggest concern is my children. I have a 3 week old baby, a 19 month old and a seven year old. I just don't even want to think about my infant getting bit by one of these. my fiance thinks I am crazy and over reacting. i told him to call an exterminator or I was getting the kids out of the house till he did. maybe I am over reacting I don't know. I was hoping that you could tell me if this is even a yellow sac spider or just some harmless little critter. any help would be wonderful!! thanks so much. Cortney, Monroe Michigan.

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Reply: Yes I agree it does look like a yellow sac spider. Click for a larger view. glen

27 January, 2008
Good Day, I live in Southern, Michigan on Lake Erie. We have spiders galore and they have started coming out since its April. Just wondering if you could ID this spider. I think it is a yellow sac spider after looking around on your site. Originally, I thought it was a young wolf spider, because we have lots of those. It was about 1/2 inch in total length, so pretty small, but its early spring. Thanks, Angie

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Reply: The yellow one looks like a yellow sac spider and the dark one like a broad faced sac spider.

28 September, 2008
Hi Glen, Attached is a photo of 2 spiders. I've come to the conclusion that the lighter one is a yellow sac spider. The darker one looks like a yellow sac - but darker. I've come across nothing online that says whether yellow sacs darken in fall. We moved into our house in November and we've had somewhat of an infestation of the lighter spiders (yellow sacs, right?) The long story: I have a 2 year old. I never kill spiders. Before I found out they were yellow sacs I was putting them outside. When we found out what they were, my wife said "let me get this straight, we're putting the venomous spiders out in the yard where our daughter plays?" So that stopped. Then I got a terrarium but that was too creepy and filled up way too fast with yellow sacs. So then I got a bug vacuum (backyard adventures) and instituted a catch and release program where I would walk down the block a ways and free them. Anyway. Spring was bad (2-3 spiders a day - mornings and night time) Summer was great - no spiders. Fall is shaping up like spring - except for these darker versions that seem to be showing up. I worry about my daughter getting bit. I've been spraying a concoction of vinegar and coconut oil. That seemed to help in Spring to keep them away. So here are my questions: 1. Can you confirm that they are indeed yellow sacs? 2. Can you tell me what the darker spider is in the picture? 3. Do you have any ideas how to politely ask the infestation to move outside? Thanks for your time and your website. I will click on many google ads for you. Your site is a wealth of great info. Sincerely, Jeremy


Click for a larger view.
 

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3 July, 2008:
This spider was crawling on the Bed last night. I would like to know what it is and if they are dangerous? Thanks, Calvin

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30 June, 2008:
Hi Glen, These are pictures of what may be a Yellow Sac Spider that was in our kitchen back in May. These things are turning up a lot, but that's not unusual. They appear every summer with no problems beyond a few family freak-outs. I'm the only member of my family that doesn't scream, jump, then attack when I see a spider. Feel free to use the pictures if you want. --Damy

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10 May, 2008:
Hi Glen, I have a major infestation of this spider. I have removed from my kitchen over 30 of them in the past week, by either removing them and replacing them out doors .. well, that was at first when we were being humane, then got freaked out and began vacuuming them up. I've vacuumed at least 20 in the last 48 hours. Please let me know if you have any insight for me on the type of spider and whether or not they're dangerous and how to rid my home of them.
Sincerely, Sheila

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10 May, 2008:
Hi Glen, I think this may have been a Yellow Sac Spider. I know I've already sent pictures of two different spiders that I thought were Sac Spiders, but I'm pretty sure this is one. It looks very, very similar to some of the Sac Spiders on your site. But I could be wrong. There is a never-ending supply of spiders I can't ID around here. There are several I can think of that I'm just waiting for an appearance from this summer. I will certainly photograph them and send you the pics. Feel free to use the pictures I've attached. --Damy

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10 May, 2008:
Hi Glen, I think this may have been a Yellow Sac Spider that webbed down beside me and started grooming itself while still dangling on a web. He finally dropped down to the floor where I managed a few photos as he crawled carefully around obstacles. I uploaded a video of this activity to Youtube: http://www.youtube.com/watch?v=jIcwsSphExc. Attached are the best pictures I snapped of him. Feel free to use them if you want. --Damy

Click for a larger view.

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Reply: Be careful, it looks like a yellow sac spider. I doubt that the little bites would be from this spider though.

27 January, 2008
Hi guys.  Thought maybe you could identify this spider.  I could probably get a better photo if I try a bit harder.  We have them in our house in Champaign, Illinois.  My wife has had little bites before and we wondered if they were spiders.  Generally we like them but wanted to be sure it was nothing to worry about.  Thanks a bunch. Jesse

Click for a larger view.
 

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3 September, 2006:
Hi, Just been looking at the website and it is very impressive. The pictures I have attached are of a spider found in a bedroom in my house in Poland. Being British, I have never seen anything like it before and wondered if you could identify it for me and let me know if it is dangerous. Many thanks Regards,  Sharon

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Reply: Be careful it looks like a yellow sac spider.
28 August, 2007:
Hello! I've loved your site for a long time, but hadn't been able to find it for awhile. Thankfully I found it again! I've done well at not killing spiders in and around my house the past year or two. I've learned how to co-exist with them nicely(they eat the earwigs and the flies, which I HATE, so the spiders are now my friends).  My main question(to make a long email longer) is about a spider I found in my bathtub last night. After looking on your site, I'm thinking that it could be a Yellow Sac Spider, and if it is, I feel awefully silly about not trying harder to get it out of my house at least. Just wondering if you could take a look for me and let me know what you think? And, if I see it again, what would be the best course of action... I'm assuming removal from the house- which I was going to do last night, but got creeped out by the darn thing and by the time I went back to try and capture it, it was gone. I have 4 kids and 2 dogs, and wouldn't want anyone getting too close and getting hurt by it if it is a Yellow Sac Spider (or any other harmful spider). Any help would be Greatly appreciated!  Heather, Colorado Springs, CO

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Reply: Yes I agree it looks like a yellow sac spider.

21 July, 2006:
Hello, I live in Northern California in what is considered the high dessert, (Siskiyou County). I found this spider crawling across my floor, and after looking at your site, belive that it is a Yellow Sac Spider. I request your opinion, and hopefully the picture has enough detail for you to give an opinion. This Picture May Be Reproduced . Thanks Chris

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Reply: Be careful it looks like a yellow sac spider.

8 July, 2006:
Hi, My kids found this spider in the house and asked me to take it's picture. I thought it would be neat for them to find out what kind of
spider it was. If it helps, we live in western Michigan. Thank you in advance for any help you can give us. Kim

Click for a larger view.
 

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13 June, 2006:
I live in Plymouth, MA and I seem to have a spider problem. I see at least one of these a day in my house. Sometimes 2 or 3 per day. One  morning there were 3 all within a ten foot radius at once. Is it  normal to see this many? I have done some research online and would
just like to get some sort of confirmation. I believe they are sac  spiders? To be honest this scares me because I have also read that
they are the most common cause of spider bites in the US. They seem  to confine themselves to corners and where the walls meet the  ceilings, but have also been caught crawling across walls and  ceilings. They also fall towards the floor when disturbed. Are these  dangerous and should I be concerned? How can I minimize their  existence inside my house?
Thanks, Kevin Olson, Plymouth, MA

Yes, that is a Cheiracanthium
species sac spider, which ARE medically significant. Nathan

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Reply: First one could be a yellow sac spider: http://www.srv.net/~dkv/hobospider/yellosac.html and they can cause a painful bite.
30 May, 2006:
Good morning, I live near Burlington, Vermont, USA. Love the sight, though it gives me the willies like you wouldn't believe. I found three spiders recently, and would like to know if anyone can help with identifying them. (Please feel free to eliminate any pics you feel are extraneous.) Sorry about the quality of these two, it was full dark, and I was releasing the next spider, when I saw this one. Sitting on a 2x6 board ... .5" - .75" longish

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Reply: The closest match I could suggest is the yellow sac spider. Check this page to compare.
12
November, 2005:
Dear Glen, I have a little bit of a strange situation. It is going to sound like a joke, but I promise it is not. I am in the Philippines and I have a small baby monkey that was bitten by a spider. He was trying to catch it to eat it and apparently the spider was not willing to go without a fight. It definitely bit the monkey because the monkey rubbed his hand for several minutes after the bite. I need your help in identifying the spider to know if there is anything I can do or should do to minimize the effects of any venom that might be involved. I really appreciate your help. Thank you, Robert Ross

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Reply: Be careful with this one as it resembles a yellow sac spider which can give a nasty bite. Click here for more info.

23 October, 2005:
I found this spider above my fridge and I don't know what it is? its about  the size of a dime and very fast. please help. Thanks, Josh.

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Reply: Cheiracanthium inclusum, the yellow sac spider, which is medically
significant. - Nathan Hepworthh

17 October, 2005:
PS. After seeing your site, I found the species of spider that live all  over our home. They appear to be sac spiders (again, see photo), and it  seems that maybe they aren't necessarily the best candidates as roommates.

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20 July, 2005:
Hi, is this spider a yellow sac spider? We live in Philadelphia, Pa. Any help would be appreciated. Thanks, mike
Click for larger view.

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Reply: http://www.bugguide.net/node/view/3366/bgpage Nathan Hepworth

23 June, 2005:
Ok I took some better pics little boogers are hard to take pics of anyways maybe these will help I live in Ottawa Canada maybe the region may help in determining what type it is like I said I have never seen one like this before Thanxs again!

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Reply: This picture has been posted before, on this page: http://www.spiderzrule.com/spiderphotos04.htm And there is an ID , in  red text, above the image. The spider is Cheiracanthium inclusum, the yellow  sac spider. Go to this website for more info: www.hobospider.org. A yahoo search on the scientific name should give you  some more pics and/or info.  - Nathan Hepworth..
4 March, 2005:
Hi, my name is Sonia. I have attached a photo of the spider that keep showing up in my basement. I'm just wondering if you can tell me what kind they are and if they are dangerous. I'm concerned, because I have a 1 1/2 year old daughter that had spotted the last one and tried to pick it up. I searched up and down your website and couldn't find anything that looked like this. It has a reddish clear body.
Please Help!!

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