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Spider Photos - Woodlouse Hunters

Dysdera crocata (the woodlouse hunter), has been transported over much of the planet together with its preferred foods - woodlice. Dysdera also feeds on beetles. These spiders have very large chelicerae, which they use to pierce the armored bodies of woodlice and beetles. There are also some reports that they have a mildly toxic venom that can cause local reactions in humans; with their huge fangs there is little doubt that they could bite if threatened, but the venom has not been well studied. It is probably wise not to handle these spiders. The spiders have their six eyes arranged in a semicircle, but have only the first two pairs of legs produced forward. Dysdera crocata has a characteristic colouring - the carapace is dull red-brown and the abdomen gray or tan. The "two-tone" look, with the abdomen much lighter than the cephalothorax, is quite striking. These rather large, burly-looking, slow-moving spiders are often seen in the autumn in basements and other cool areas of homes; presumably they are looking for a winter shelter.

All photos are copyright to their owners and may not be reproduced without permission. Please choose a section.

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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
 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

WOODLOUSE HUNTERS

Reply: I think this is  a woodlouse hunter.
15 August,  2008:
Awesome site and you've never let me down. Found a few of these in the traps this weekend. I believe spider1 is a hobo but I have seen SO many funnel weavers and hobo pictures.. it looks like it could be either. I am in Utah, USA. We have small children and I really need to rid the area of hobos if we have them.. Our playroom is in the basement. I sprayed for spiders inside and out yesterday but that spider1 was in the trap this morning. The second spider I have no idea what it is. Both were in traps.

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5 August,  2008:
Hi Glen, I don't know what kind of spider this was. The tiny thing scurried out from under some potting soil on my carport the other day. I assume it's some kind of spider that likes dirt. If you have any ideas, let me know. Feel free to use the pictures if you want. --Damy
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16 June, 2008:
Hi, I live in Cape Coral, Florida, USA and found this spider on my kitchen counter. Could you help me find identify what kind of spider it is? Thanks!
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13 May, 2008:
Here is one for you, feel free to post it. I believe it is a woodlouse spider? Found it in my basement in the Chicago area.
Alan K
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21 January, 2008:
Hello there. I was just wandering if you could identify this spider for me as I have never seen one like it before. I found it on my kitchen floor in Scotland last night. I measured it at around 2cm in length. I also noticed it has quite large fangs, it looks capable of biting through human skin but I'm not sure if it's venom is considered dangerous.
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6 June, 2007:
I live in Portland, Oregon, USA. I've been seeing quite a few of these beasts around (they appear to like living in the ground or under low-lying foliage - we unearthed dozens when we pulled out some Ivy ground-cover, but I'm not sure if they were living *in* the ground or just on it under the Ivy). Size is smaller than the picture suggests, perhaps 1/2" to 3/4" including legs. They appear rather aggressive or at least highly defensive, turning and raising their legs at anyone approaching,
fighting each other, etc. Mostly they are interesting due the rather disproportionate size of their fangs (which are plainly visible to the naked eye from a couple feet away and make them appear pretty scary). Regards,
Cliff

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17 May, 2007:
I like your site. I saw a spider in my basement (I reside in Chicago) and found out it was a semi harmless spider. Its the red one. After that, I let it go and shortly after the thing gets caught in another spider's web. Not sure what the other one is, it kinda has a marble design on its rear. Could you please identify? Here are some pics. Feel free to post them on your site. Thank you.

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30 May, 2007:
This is a spider that a co-worker and myself found outside the museum here in Garden City, Kansas. (Southwest) Im not sure if you can tell on the attactched pictures that the fangs are about if streched out are almost a quarter of an inch. (They would hurt if bitten lol) they are very sharp looking. If you can please email me back with the name of this spider and also the latin name so we can research it, i would greatly appreciate it. Thank You for your time Ashley Guinn

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17 May, 2007:
I like your site. I saw a spider in my basement (I reside in Chicago) and found out it was a semi harmless spider. Its the red one. After that, I let it go and shortly after the thing gets caught in another spider's web. Not sure what the other one is, it kinda has a marble design on its rear. Could you please identify? Here are some pics. Feel free to post them on your site. Thank you.


Click for a larger view
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Reply: It looks like a wooodlouse hunter.

17 May, 2007:
Glen, My daughter and niece found a spider for which I have never seen before. Does anyone know what kind of spider this may be. Thank You

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Reply: It looks like a wooodlouse hunter.

21 April, 2007:
This is a spider that a co-worker and myself found outside the museum here in Garden City, Kansas. (Southwest) Im not sure if you can tell on the attactched pictures that the fangs are about if streched out are almost a quarter of an inch. (They would hurt if bitten lol) they are very sharp looking. If you can please email me back with the name of this spider and also the latin name so we can research it, i would greatly appreciate it. Thank You for your time, Ashley

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8 November, 2006:
Hi Glen,attached are two photos of a spider that a good friend of mine came across while doing some plumbing work.It was in Descanso,a mountainous area around San Diego. He found it in a water valve check box,and it was apparently very aggressive.It's quite fast, I can vouch for that! Neither of us recalls seeing these before.Any feedback would be much appreciated,and of course post them if you like. Thanks, Roy
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Reply: It looks like a wooodlouse hunter.

1 October, 2006:
Have found similar spiders in my house, but they were brown. First one that
I've seen that was red. Are these wolf spiders or something I should be
worried about?

Thanks,
Tony
 


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Reply: I think it looks like a wooodlouse hunter too.

23 August, 2006:

Hello, I am hoping you might be able to ID this spider for me. I have killed a couple in the house. Now, however, they have been showing up dead at the bottom of the kids' swimming pool. I've been search photos and can't figure out what it is. Any idea? Thanks so much for any help you can offer.

Pam


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Reply: I think it looks like a wooodlouse hunter too.

31 July, 2006:
Hello! I found this spider scurrying across my floor last night. He was very fast and seemed to be very aggressive. I think he was about the size of a quarter, maybe a bit bigger. My best guess is the Woodlouse Spider Dysdera crocata). I'm in southeastern Michigan. Any help would be greatly appreciated. ~Nichole

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Reply: I think it looks like a wooodlouse hunter too.

24 July, 2006:
Greetings! Came across your cool spider website. My girlfriend came across this cool spider at the Painted Hills Unit of the John Day Fossil Beds National Monument in Oregon. We haven’t been able to id it unequivocally. I think it might be a species of Dysdera but I could not find this genus on a list of Oregon spiders. Any ideas? Thanks. Cheers, Alex

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Reply: I think it looks like a wooodlouse hunter too.
22 July, 2006:
Hiya, first, I really like your site--thanks for having it out there for folks to use. I've tried figure this one out on my own--I've not been able to find anything. It's red and the body is 10mm long and about 3mm wide--25mm legs extended. One photo is a side view, and the other is the underside as it climbs the inside of a glass. I'm in southern NJ, and this is the first time I've ever seen this type of spider here--we have plenty. I will let it out from under the glass in the morning when I can see what I'm doing. I'm a buddhist, so I try very hard not to kill spiders...and anything else! Anyway, just curious what it is. I already know I have wolf spiders in a back corner of my basement--and jumping spiders on the patio, along with some really cool weavers. I'd appreciate any help you can give. Nina

.

Reply: I think it looks like a wooodlouse hunter too.

18 June, 2006:
Sir, Can you identify the spider attached. It was observed in Cedar City,  Utah, USA on 17 June 2006 in a garage. Thanks
leo
 

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Reply: Yes it is Dysdera crocata, the woodlouse hunter - glen
3 February, 2006:
Hi Glen,  Some co-workers found this spider walking along outside out office a few weeks back. Surprising considering it's winter here in northern Illinois.  I think it's a Dysdera crocata spider. Randy Bachmann, Turner Junction, IL

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Reply: I think it looks like a wooodlouse hunter too. Could be a male.

26 November, 2005:
I found this one in my dogs water dish, and appears to be belly up, I was  told it could be a woodlouse spider, but I would think the bottom would be a lot  bigger, I live in Northeast Ohio, any suggestions?
 

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Reply: It is Dysdera crocata, a woodlouse hunter spider.

9 October, 2005:
Hello, I live in england on an island called the Isle of Wight and found this spider in the house... it was crawling very sluggishly and couldnt really move, even with a bit of a poke. So we put it outside and it died on us as soon as it touched the ground! Can you tell me what sort of spider it is please? We had never seen this type before! Thanks! Josef

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Reply: The red spider is a Dysdera crocata, the "woodlouse hunter". The Dysdera can cause a blistering rash if it bites, but isn't considered dangerous.

7 August, 2005:
Hello, 2 days ago I found a red spider on my brothers living room carpet, To my surprise it was a bright red, and I have never seen a red spider in my life, They must be extremely rare in England, Uk.

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Reply: I'd say that's a Dysdera crocata "woodlouse hunter," which isn't dangerous except that its bite may cause a blistery rash.  Nathan Hepworth

6 August, 2005:
Could you please tell me what this spider is and if it is harmful? It’s about an inch in size and was found in my basement where my teen son sleeps. I’ve never seen one in my 46 years and can’t find anything identical on the web. I'm concerned.
Andrina xx

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Reply: Looks like a woodlouse hunter.
10 June, 2005:
Hello Glen, I love your site. I live in New York on Long Island and found this spider hiding in my clothes closet. This is the first time I've seen anything like it. I've spent hours checking the pictures on your website to see if I can find anything about her (?) without success. I thought maybe you or someone out there might know what kind she is and if she's dangerous to have around? Thank you, Terry

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Reply: This one looks a bit like Dysdera crocata- the woodlouse hunter, pictured below.

20 February, 2005:
This spider was in my house in Elgin Il. Can you help me to identify it's name and type? It was very aggressive if you touched it or put anything in front of it. It put it's fangs in a tissue and would not let go. Is it possible that it was just defending itself, because it lost two rear legs when my girlfriend picked it up? The body was very hard and the back was soft. I have touched many spiders and none have ever been so defensive or combative for that matter.  thanks, mike

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Reply: That is a Dysdera crocata- the woodlouse hunter. It's  not dangerous, but the bite can hurt and may cause a rash with blister-like  bumps. This species is in both the US and Europe. See : http://www.ento.psu.edu/extension/factsheets/Spider/spiders.htm
- Nathan Hepworth
18 February, 2005:
Hey there,
I was on holiday in Clearfield Utah. Here i found this spider in the bathroom. I'm from Holland so I don't have a clue of what kind of spider it is. I wondered if you could tell me. Thanx in advance
Greetings Gerrit Hoogland,
The Netherlands

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4 October, 2004:
Attached are three pictures of a spider I found in my bathroom. The third picture is blurry, but includes a dime to show the size. Any help in identifying this spider would be helpful.

Thanks,
Rob Provost

Reply: That looks like it could be Dysdera crocata,  the woodlouse hunter too. Check out these links: Click here or here.
 

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Reply: This looks like a woodlouse spider. Here's a link to a page on them:
http://spiders.entomology.wisc.edu/Dysderidae/Dysdera/crocata.html
29 July, 2004
I live on southern Vancouver Island, and these spiders are very common around my house, and I was wondering if you knew what they are. They generally live under things like rotting logs, or flower pots, but have been known to come inside. They can climb up and down smooth surfaces and they run very fast. They sometimes burrow in sand or dirt as well. Here are some pictures I took this morning; it was rather easy to find a spider. The spider is about 5 or 6 cm long, legs included.

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