Currently viewing the category: "Cobweb Spiders"
What's That Bug? does not endorse extermination

Subject: Spider (Identification)
Location: Montenegro
July 4, 2014 4:21 am
Found this guy on a pile of big stone tiles in the sun, The picture isn’t perfect but I think it had 6 of those orange/red spots on his back. Small in size few mm in size (3-7mm maybe?).
Signature: eatyourdog

Immature female Widow Spider

Immature female Widow Spider

Dear eatyourdog,
This is an immature female Widow Spider in the genus
Latrodectus.  According to this araneae website, the species Latrodectus tredecimguttatus is found in Montenegro and the site states it is found:  “In dry habitats, dunes, sandy beaches, shingle beaches and on low vegetation.  This species can bite humans, as also all other Latrodectus species in the world. Often, a bite causes significant effects, with severe and long-lasting pain in two-thirds of cases, preventing patients from sleeping in one-third of cases. Pain increases in more than half of the cases within the first hour and mostly radiates into the limbs or abdominal pain develops. Typical symptoms include sweating in about 70% of cases and further systemic effects in 20–30% of cases (nausea and vomiting in less than 20%, raised temperature and neuromuscular effects in about 10%, hypertension in less than 10% of cases). Pain usually lasts 1–2 days and the other symptoms 1–4 days. In Europe, bites have become very rare in the last decades. If needed, a symptomatic medical treatment is recommended.”

What's That Bug? does not endorse extermination

Subject: False Widow?
Location: San Francisco Bay Area, U.S.
February 22, 2014 10:23 pm
Hello there-
I found this lovely lady (?) up in a corner near the ceiling of our San Francisco garage/basement (we live on a hill, so that wall is actually subterranean). There’s a similar but smaller spider nearby that I can’t get a good picture of because it’s tucked to far into a corner. I can’t guarantee how true the color are as the pic was taken with a flash. I was initially intrigued by the spider because it looked quite black in the dark and we do get the occasional widow in this region, but now that I’ve seen it up close, I’m wondering if it might be a Steatoda grossa?
Signature: SnorkMaiden

False Widow

False Widow

Dear Snorkmaiden,
We agree that your spider looks like the False Widow pictured on BugGuide
Your individual appears to be an immature female, and when she matures, she will lose the markings on the abdomen and BugGuide has nice images of the female life cycle.

Good to know. Many thanks for the response!

What's That Bug? does not endorse extermination

Subject: Unknown Spider
Location: Torrance, California
January 28, 2014 4:39 pm
Hello Bugman,
I need some help identifying this recently deceased spider. My 6-year-old son found it in a corner of my house after we came back from a long vacation. It was shiny brown, with white stripes on its back, and about a penny size. It had made a small, irregular web, and was living just a few feet away from a Brown Widow (also deceased, sorry). I have never seen this kind of spider before, and have not been able to find a match on the Internet.
Thanks.
Signature: Daniel

Immature Brown Widow

Immature Brown Widow

Hi Daniel,
This looks to us like an immature Brown Widow.  See BugGuide for a comparison image.

What's That Bug? does not endorse extermination

Subject: Spider question again
Location: Gunung Manglayang, West Java, Indonesia
October 18, 2013 11:23 pm
Hello Daniel,
I got a question about a spider again, and I only got one decent photo of it.
In term of size… it’s a relatively small spider about 1 to 1,5 cm toe to toe, and I found it hide behind a banana leave.
Hope that whatsthatbug could help identifying this guy :)
Signature: Mohamad Idham Iskandar

Unknown Spider from Indonesia

Spiny Theridiid Spider from Indonesia

Hi Mohamad,
We are sorry about the delay.  We have been very busy and we somehow overlooked your request.  We do not recognize your spider, but we will post the image and hopefully one of our readers will write in with an identification.

Karl provides a classification
Hi Daniel and Mohamad:
I believe this is a comb-footed spider (Theridiidae), also known as tangle-web or cobweb spiders. As far as I can tell, the black blade-like hairs at the end of the abdomen are characteristic of two genera, Chrysso and Meotipa. Christa l. Deeleman-Reinhold refers to them as spiny theridiids. Unfortunately, that is as far as I could get, as I could find no online photos or descriptions that pointed me to any particular genus or species. Nicky Bay Photography has posted numerous excellent images from Singapore that come close, most identified as Chrysso sp. or just Theridiidae. You can click here or here to check out two good examples. Project Noah also provides an image of a similar spider from India that it identifies as Chrysso sp. Regards.  Karl

Thanks so much for doing this intensive research Karl.

Wow thanks a lot Daniel and Karl for the clue…, first time seeing this spider and for me that is really interesting.

What's That Bug? does not endorse extermination

Subject: strange spider
Location: United Kingdom, midlands
October 13, 2013 1:03 am
Hi, I found this spider living on my brussel plants in july/August never seen one like this before, can you tell me what it is
Signature: automatically

Cobweb Spider

Candystripe Spider

Dear automatically,
We have identified your Cobweb Spider in the family Theridiidae as
Enoplognatha ovata.  You can find some nice matching images of this variably colored spider on Nick’s Spiders of Britain and Europe.  You can view some of the color variations on BugGuide.  According to Eurospiders, it is commonly called the Candystripe Spider.

Thanks for your help, this is a great service will reccomend to others

What's That Bug? does not endorse extermination

Subject: Spider eating a cockroach in LA
Location: Los Angeles
August 19, 2013 6:57 pm
Hi,
We recently started renovations on our garage here in Los Angeles. I couldn’t help but take a picture of this spider eating a cockroach on the side of our garbage can. I can’t figure out what spider it is. Can you help? Thanks! Megan. (in Los Angeles).
Signature: Megan.

Brown Widow eats Cockroach

Brown Widow eats Cockroach

Hi Megan,
Your spider is an introduced Brown Widow,
Latrodectus geometricus.  According to BugGuide:  “World wide in the tropical zone. It was introduced in Florida and has since been observed moving north through Georgia, and into South Carolina; it has also been officially recorded in California, Alabama, Mississippi, and Texas.  Habitat Found around buildings in tropical climates.(1) However, it is an introduced species and is the most human-adapted of the species occurring in the South Eastern US. Its webs may occur anywhere there is sufficient space to make one. It may be extremely abundant on houses and other man-made structures (e.g., barns, fences, guard rails, bridges). It reproduces frequently and disperses rapidly, making it nearly impossible to control.”  As with other introduced species, which we consider Invasive Exotics, the Brown Widow might be contributing to a loss of species diversity by displacing native species where it has been introduced.

What's That Bug? does not endorse extermination