Currently viewing the category: "Hacklemesh Weavers"

Subject: What’s this spider
Location: Santa Cruz Mountains California
November 7, 2016 8:51 am
I was out I was out getting silverfish for my blue belly lizards. And underneath one of the two by fours on the deck was this pretty large spider. which I have never seen in my 50 years living here. I like spiders because they eat mosquitoes and other nasy pests. so can you help me identify it?
Signature: Fixitwill

Possibly Female Crevice Weaver Spider

Possibly Female Crevice Weaver Spider

Dear Fixitwill,
Though your image lack critical clarity, we believe this might be a female Crevice Weaver Spider in the genus
Kuculcania.  See BugGuide for some images.

Wow thank you so much for your time!! It was hard to get a good picture because it kept moving around on me.

Subject: Snowy recluse?
Location: Stratford, Connecticut
January 30, 2016 7:48 pm
I snapped this picture while dog walking last week. I was surprised to see a spider crawling across the snow. Is it a brown recluse?
Signature: Karen

Hacklemesh Weaver in the Snow

Hacklemesh Weaver in the Snow

Dear Karen,
We are going to go out on a limb and say that this Spider walking on the snow is an unusual sighting.  The pronounced pedipalps indicate your spider is a male and the large mandibles made our identification relatively easy.  The Spiders of Connecticut site has a good image of a male Hacklemesh Weaver,
Amaurobius feros, that looks like a very close match to your spider.  The site states:  “Native to Europe, it has become established in southeastern Canada and the eastern U.S., though is not limited to those regions. This robust spider is common in and around homes, but also lives under rocks, logs, in leaf litter, and other dark, humid places. Adult males are notorious for wandering in the spring.”  BugGuide also has a good matching image and the information page on BugGuide provides the common name Black Lace Weaver and states:  “A synanthropic species; found associated with humans and man-made structures.”  Spiders.Us provides this life cycle information:  “For this nocturnal spider, mating seems to take place mostly in the spring, but sometimes also in the fall. However, because this species seems to have a lifespan of 2 years or more, it is possible to find sexually mature specimens year-round, so mating may take place at any time really. Egg laying seems to happen mainly in the early summer. The female deposits eggs into a lens-shaped, silken sac about 7-15mm in diameter. Each sac can have anywhere from 60-180 individual eggs inside and it takes about 3-4 weeks before the spiderlings emerge. She stands guard over them that entire time.  Interestingly, this species is matriphagous, which means the mother sacrifices herself as food for her spiderlings. This happens a day or two after their first molt, which is roughly one week from their emergence from the egg sac. This species is considered ‘subsocial’ because, after cannibalizing their mother, the spiderlings remain together and feed communally for about a month. They overwinter in their immature stage, and most overwinter once again in their adult form.”  Our favorite bit of trivia also comes from Spiders.Us:  “Cloudsley-Thompson (1955) mentions that, in England, Amaurobius ferox is sometimes called the ‘Old Churchman’ because it can be seen scurrying around on the walls and pews of old churches before rain storms.” 

Awesome Daniel!  Thanks for the ID and the info about him.  I’ve been a fan of the site for many years and this is my first “bug of the month”, very cool!  Happy (early) spring!
Karen in CT

Subject: Can you help name this spider?
Location: Hamilton, ON Canada
October 19, 2015 6:26 am
I live is southern Ontario Canada and this fall we were tearing down our shed and found a nest of about 50 of these. I’ve never seen a spider like this before. Wondering if it’s something I should be concerned about?
Thank you so much!!
Signature: Sarah Keddy

Hacklemesh Weaver

Hacklemesh Weaver

Dear Sarah,
We believe we have correctly identified your spider as an introduced Hacklemesh Weaver with no common name,
Amaurobius ferox, based on this image posted to BugGuide.  According to BugGuide:  “Range Mostly established in southeastern Canada and the eastern USA so far. However, there may be relatively recent populations in WA (King County) and CO.
Habitat A synanthropic species; found associated with humans and man-made structures.
Remarks This species is native to Europe; its first Nearctic record was from Providence, Rhode Island, November 8, 1871.”

Subject: Hacklemesh Weaver Spider
Location: Central New York
July 7, 2014 6:53 pm
My mom found this spider in her ice cream churn that she kept in her basement and asked me to identify if it was dangerous or not. I took some pictures of it and released it into a pile of slate outside. From what I can tell, I’m pretty sure it is a female Hacklemesh Weaver Spider. Is my id of it correct and should she worry about them?
Signature: good son

What's That Spider???

What’s That Spider???

Dear good son,
Alas, we aren’t certain.  Your spider does resemble this female Hacklemesh Weaver,
Amaurobius ferox, that is posted to BugGuide, however the BugGuide individual seems to have longer and thinner legs than your individual.  Our first thought was female Southern House Spider, but BugGuide does not report them as far north as New York.  Perhaps one of our readers can assist in this identification.

Subject: Spider
Location: Sitka, Alaska
January 24, 2014 11:20 pm
What kind of spider is this? Its kind of big as the newspaper lettering is about 3/4 of an the spider must be about over an inch long… I live in Sitka Alaska and I found this spider in the house around early December of 2013. I caught it using a glass mason jar. I released it outside after I took this pic of it. Thank you.
Signature: Don’t kill any bugs please

Ground Spider

Hackelmesh WeaverSpider

We believe this is a Ground Spider in the family Corinnidae, possibly in the genus Castianeira.  You can see some similar looking spiders on BugGuide.  For your kindness to the lower beasts, we are tagging this posting with the Bug Humanitarian Award.

On Fri, Jan 31, 2014 at 9:08 AM, daniel marlos wrote:
Hi Mandy,
Any thoughts on this critter?

Hi Daniel,
That one is a female “hacklemesh weaver” in the genus Callobius, family Amaurobiidae. There are only two species recorded from Alaska: C. nomeus and C. pictus.  Of those two species, C. pictus is the one that usually has faintly banded legs like this Sitka specimen has.  Callobius aren’t your run-of-the-mill house spiders, so this one probably got in accidentally, or was carried in on firewood if the photographer uses a wood stove or fireplace. They are really gorgeous spiders in person, vibrant burgundy or wine-colored!

Wow, thanks Mandy,
I will look for some links.

You’re welcome. =)  Here’s also a link to the Callobius section at BugGuide:  Not every species is represented there yet, but we have some examples of both the Alaskan species (nomeus & pictus).
Geez, I can’t believe we’re already a month into 2014! Time goes too fast. Happy Chinese New Year to you too!

Subject: Spider Identification
Location: Humboldt County California
October 14, 2013 12:00 am
Please help me identify this spider I’m curious as to how dangerous it may be as well
Signature: Cheyanne

Unknown Spider

Hacklemesh Weaver Spider

Hi Cheyanne,
We are continuing to research this and we have requested assistance.  Could you please provide additional information?  How large was the spider?  Where exactly was it found?  Any other helpful information is appreciated.

Eric Eaton responds:  Hacklemesh Weaver
Pretty sure this is a specimen of a hacklemesh weaver known as Metaltella simoni:
Please suggest that the person submit their image to (not sure how exactly to do that, sorry).