Currently viewing the category: "Ground Spiders and Ant Mimics"
What's That Bug? does not endorse extermination

Subject: Wolf Spider?
Location: Southern California
May 21, 2013 1:03 am
Hi there. I’ve been getting a few of these spiders coming inside for a visit. This most recent one had a bit of yellow to his marking. They all have the pincers that extend from the abdomen. Am guessing they’re wolf spiders, but not sure.
This particular spider was tangled in a mouse glue pad and was easy freed outside once I got his leg free. Thanks for helping identify.
Signature: Kevin

Western Parson Spider

Western Parson Spider

Hi Kevin,
This is a Parson Spider in the genus
Herpyllus, and thanks to your letter, we now know that there is both an Eastern Parson Spider and a Western Parson Spider, Herpyllus propinquus.  According to BugGuide:  “H. propinquus is basically identical in appearance to H. ecclesiasticus, and examination of reproductive organs is needed for positive identification.”  What you are referring to as “pincers” are actually spinnerets.  Because of your kindness releasing this hapless Western Parson Spider, we are tagging you as a Bug Humanitarian.

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Subject: Colorful Nor Cal spider
Location: Oakland, California
April 21, 2013 3:44 pm
Hi there,
Met this one in the bathroom and noticed coloring I hadn’t seen before so went and got my camera. It was maybe 3/4” long. Didn’t seem aggressive or especially fast moving. Probably about 80F in the house.
Signature: Thanks

Castianeira thalia

Castianeira thalia

This is one of the Ant Mimic or Ground Sac Spiders in the family Corinnidae, and we quickly identified it as Castianeira thalia on BugGuide.  There are color variations with or without the red markings, and those individuals with the red markings are definitely more noticeable. All the reports of this species on BugGuide are from California.  Though we have postings of other members of the genus, this might be a new species for our site.

Thanks very much for letting me know.
Craig.

What's That Bug? does not endorse extermination

Subject: funnel spider???
Location: Brampton, Ontario
March 27, 2013 10:57 am
Dear Bugman,
Thank you so much for your site. I often referrence it to help identify the mysterious critters I come across. This one is a beauty. I’m thinking funnel spider, but her markings are unusual for me. Most of the ones about here are rather plain. I actually found her IN the house last night (sitting atop my tea tin). This morning another dashed inside when I opened the front door. I scooted it back outside (as I already had its friend captured for identification). I went straight to the net to find some info and came across an identical spider pic with no identification ( except one site calling it a yellow sac spider, pfft!!). My camera is not good for insect photos so I won’t bother with sending you a blurred vague image. Here is the pic I found online. If you could help that would be great. I’m gonna let this gal go soon but I’d like to know what to call her next time we cross paths, or when she decides to visit for tea again.
Signature: D.

Eastern Parson Spider

Eastern Parson Spider

Hi D.,
The Eastern Parson Spider, Herpyllus ecclesiasticus, received its common and scientific names, according to BugGuide, because of the reference:  “to the white dorsal stripe on the abdomen, which resembles a cravat worn by a parson or minister during the 1800′s.”
  The Eastern Parson Spider is a Ground Spider, not a Funnel Web Builder.

What's That Bug? does not endorse extermination

Subject: RED LINE SPIDER
Location: Houston Tx
December 28, 2012 12:00 pm
Dear Bugman,
I found this guy in my sink. As soon as i noticed it was there it ran and hid in the crevice under the countertop. I was only able to get a picture of the back end of the spider because of its stealthiness. Please help me identify what kind of spider it is because I am mostly worried it may be some kind of widow spider. I have 3 children in the house that I have to keep away from my bathroom area for fear of getting bit.
Signature: Thank you ever so kindly. Iris S.

Ant Mimic Spider

Dear Iris,
This is a harmless Ant Mimic Spider in the genus
Castianeira.  You can verify the ID on BugGuide.

What's That Bug? does not endorse extermination

Subject: What is it?
Location: Houston, Texas
November 2, 2012 9:29 pm
Found this spider crawling away from my bed and I freaked out. I really dislike spiders. I tried searching online to see if it is venomous. The search just left me confused…black widow family or red stripe spider from Australia? It looked more like a red stripe spider from a image I saw online. What do you think?
Signature: Cyn

Ant Mimic Spider

Hi Cyn,
Though the coloration and markings are superficially similar to the dangerous Australian Redback Spider, this Ant Mimic Spider in the genus
Castianeira is perfectly harmless, and you can read more about it on BugGuide.

What's That Bug? does not endorse extermination

Redback in Louisiana
Location: Louisiana
April 19, 2012 12:02 am
Hi!
I found this spider on my sister’s door (in the door jam)of her apartment. I got it in a cup, took a picture, and let it go outside.
Signature: Kristi

Red Spotted Antmimic Spider

Hi Kristi,
The Redback Spider,
Latrodectus hasselti, is an Australian species that is related to the Black Widow and its bite is considered dangerous.  To the best of our knowledge, there have never been any reports of Redback Spiders in North America, but plenty of Australian species have become established here and elsewhere, so anything is possible with global travel being so commonplace these days.  You can read about the Redback Spider on the Australian Museum website.  Our web search led us to the Spiderzrule website where we identified this Antmimic Spider, most likely the Red Spotted Antmimic Spider, Castianeira descripta.  We verified that identification on BugGuide though we would not rule out the possibility that your spider is a relative, Castianeira crocata, also represented on BugGuide.  It is not considered to be a harmful species.  We are tagging your posting with the Bug Humanitarian Award for your catch and release of this interesting Antmimic Spider.

Thank you for responding. It is nice to know that it wasn’t poisonous! I prefer to let them go so they can eat our mosquitos! ;)

What's That Bug? does not endorse extermination