My Petz Rule
Advertising Prices
Keeping Spiders
Spider Web Construction
Spider Bite Treatment
Spider Removal
Spider Posters
Great Spider Photos
Spider Legends
Spider Superstitions
Web Photos
Questions & Answers
Year 5's Red-back 1998
Year 5's Spiders 2000
Year 5's Spiders 2001
Common Spiders Aus
Common Spiders USA
Australian Spiders -
Red-back
Australian Spiders -
Funnel-web
Other Spiders
Wandering Spider
Another Arachnid
Spider First Aid
Recluse bite photos
Famous Spider Poems
Our Spider Poems
Viewers' Spider Poems
Spider Songs
Spider Stories
Spider Letters
Spider Art
Kids' Spider Homes
Chocolate Spiders
Cookie Spiders
Spider Lessons
Online Exercises
Spider Food Hunt
Spider Links
Spider Awards
Main Page
Email

You are viewer number:

 
Buy at Art.com
A large tarantula spider on a mans arm
Buy From Art.com
 

Buy at Art.com
Arachnids - International
Buy From Art.com

 

 
 
 

CHECK OUT MY NEW PAGES ON PETS - WWW.MYPETZRULE.COM!!

 NEW: Now you can advertise on the largest spider's site in the world!! Reasonable rates, pay monthly or yearly, choose your page, limited spaces available -  check it out now!

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 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 (1)
Unidentified Spiders 2005 (2) Unidentified Spiders 2005 (3) Unidentified Spiders 2004 (1)
Unidentified Spiders 2004 (2) Unidentified Spiders 2003 Unidentified Spiders 2002
Unidentified Spiders 2001 Spiders in Amber Closeups
Ant Mimicking Spiders  Argiopes/St. Andrew's Cross Black House Spider
Brown Recluse Spiders Crab Spiders Daddy Long Legs
Fishing Spiders Funnel Web (Aus) Garden Orb Weavers
Golden Orb Weavers Grass spiders/Funnel Weavers Hobo Spiders
Huntsman Spiders Jewelled Spiders Jumping Spiders
Leaf Curling Spiders Long Jawed Orb Weavers Lynx Spiders
Marbled Orb Weavers Mouse Spiders Mygalomorphs
Nursery Web Spiders Parson Spider Redback/Black Widow
Solfugids/Camel Spiders Southern House Spider Spined Micarathena
Spitting Spider Steadota Tailless Whip Scorpions
Tarantulas Trapdoor Spiders Venusta Orchard Spiders
Wandering Spiders Wolf Spiders Woodlouse Hunters
Yellow & Broad faced Sac Spiders    

YELLOW SAC SPIDERS

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 (photo right). 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.

..
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

..
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

..
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

..
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

..

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.

..

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.
 

..
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

.

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

..

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.
 

..

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

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

..
Reply: First one could be a yellow sac spider: http://www.srv.net/~dkv/hobospider/yellosac.html and they can cause a painful bite. the next one is a daring jumping spider and they aren't dangerous. Last one could be a steatoda of some sort: http://www.nicksspiders.com/nicksspiders/steatodabipunctata.htm
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

.

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

.
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.

..

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

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.

..
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.

....

Reply: This is a sac spider, Cheiracanthium mildei. See this page:
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!

..
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!!

..

BROAD FACED SAC SPIDERS

The broad face sac spider, trachelas tranquillus,  is often confused with the woodlouse hunter, being similar in shape & colour. Its abdomen is more sac shaped however and is a light yellow/grey with a darker marking on the dorsal side. Its cephalothorax is dark with enlarged chelicerae.  Its foremost legs are the darkest and get lighter towards the back legs and th spider grows from 3 - 10mm. It is normally found Normally found at the base of plants, in grasses and in ground debris. In the United States is is found in New England and adjacent Canada south to Georgia and Alabama and west to Kansas and Minnesota. This is a hunting spider so it makes no web. However, it builds a sac like tube to hid and rest in diurnally which is also used to protect its eggs in autumn. This spider tends to forage on other dead arachnids and insects which can cause its bite to be particularly unpleasant due to infections.

..

15 July, 2007:
Hi, I was wondering if you could help identify this spider. We have a cabin in the El Dorado forest near Lake Tahoe & these spiders appear there a lot. We find them in the sinks & other areas around the cabin. I have looked at pictures, but have not come across any that look like it could be related to this spider. Thank you for any help in you can provide me in figuring out what type of spider this is. Judy

.
1 October, 2004:
We found this spider at our work on Martha's Vineyard Island,  Massachusetts. Please help us identify it! Thanks. Kelley Debettencourt

..
Buy at Art.com
Spider Man: Crouching Spi...
Buy From Art.com
Buy at Art.com
Spider-Man 2 - Sacrifice ...
Buy From Art.com
Buy at Art.com
Spider-Man 2 - Destiny (d...
Buy From Art.com
Buy at Art.com
Spider-Man (Style A)
Buy From Art.com
Buy at Art.com
Spider-Man
Buy From Art.com

Here's a really worthwhile site to help support the kids in Africa who are suffering in the AIDS epidemic. Click on the banner for more info.>

Help keep Spiderzrule going:

 
Google
Buy at Art.com
Spider-Man 2 - Sacrifice
Buy From Art.com

Buy at Art.com
Closeup of a happy face spider
Buy From Art.com