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

Subject: White spider
Location: Southern Minnesota
December 19, 2016 1:57 pm
Found tons of these in my friend’s basement and barn. I think it is a cellar spider but when I touched it it took off crawling. They were everywhere. What could cause the white coloration? And every one I tried to touch crawled away
Signature: T. Arends

Cellar Spider with Fungus Infection

Cellar Spider with Fungus Infection

Dear T. Arends,
This is a Cellar Spider and it has a lethal fungus infection.  If it was indeed alive and it crawled away, it is not long for this world.

What's That Bug? does not endorse extermination

Subject: More Spider Fungus?
Location: Milwaukee, WI
September 18, 2016 1:45 pm
Took this photo in the crypt area in the basement of the Cavalry Cemetery Chapel in Milwaukee, WI. A living spider is in the picture too as well as something else that is much more prominent. It reminded me of this: https://www.wired.com/2012/12/spider-building-spider/, but then I saw your posts and concluded that it was a living spider alongside a dead one overtaken by fungus (definitely dead because I touched it and, thank goodness, it didn’t move!). I wonder if the living one will soon suffer the same fate. Anyway, I thought you’d like another photo of this phenomena. Thanks for your great website!
Signature: Allison Jornlin

Spider with Fungus Infection

Spider with Fungus Infection

Dear Allison,
Thank you for submitting your image of a Cellar Spider infected with fungus.  There has been quite a robust challenge to our stand that these Fungus Riddled Spiders are generally dead.

What's That Bug? does not endorse extermination

Subject: what are these spiders
Location: widnes Cheshire uk
September 12, 2015 6:32 pm
hello
I’m wondering what types of spiders these are I live in the UK, Cheshire, widnes
I would be very grateful for your input
Signature: jade

Cellar Spider from the UK

Cellar Spider from the UK

Dear Jade,
One of your images is a Cellar Spider,
Pholcus phalangioides, with a clutch of eggs.  You can read more about Cellar Spiders on British Spiders where it states:  “The species is widespread in England and Wales, and although it is absent from much of northern Britain, there are records as far north as Shetland” and “It particularly favours undisturbed parts of houses such as cellars and bathrooms where it can establish large colonies beneath baths and shower-trays. As it makes an untidy web in the corners of ceilings it is not usually permitted a permanent abode in such conspicuous situations but it has no difficulty in surviving where there is a limited tolerance by house owners. It is one of the few species of spider that has acquired a vernacular name, being known as the daddy long legs spider because of its long legs.”  It is a harmless species.  Your other image is too blurry for identification.

What's That Bug? does not endorse extermination

Subject: can Pholcus phalangioides change its coloration to match its environment?
Location: Jefferson County, Illinois
November 28, 2014 6:35 pm
Hello!
I am extremely nature friendly and generally let spiders have the run of my house within reason. This year I had a bumper crop of cellar spiders and although I find them interesting, their webs can get to be an issue and I am constantly tidying up after them. Not long ago I noticed a silk-wrapped stilt bug hanging down by the kitchen table and as I bent down to brush it away I noticed something luminous and bright green on it. Upon closer inspection I was fascinated to find that I had discovered both dinner and diner and , most importantly, the diner appeared to be one of “my” cellar spiders that had somehow turned a strange shade of green I’ve never seen before! All of the cellar spiders I have seen here are various shades of tan, brown, or even a light translucent grey, but never this bright green. Even stranger, the spider has been residing among a collection of volleyball trophies on my tabletop and the background color in these trophies is the exact shade of green. Initially I thought well yes, if you are looking at the spider at the right time of day with the right light, the abdomen is likely reflecting the green from the trophies. But the cephalothorax is the expected color, as are the legs, and even in dim light or shadow you can still see the bright green. So I am puzzled and intrigued.
I am aware that many creatures can manipulate their background color but is there anything known about cellar spiders having this ability? If she ( I say she, I can’t see any pedipalps without disturbing the spider) weren’t so fragile I would put her in a different location and watch for changes but I don’t want to harm her.
Anyway I hope I can load the pictures correctly so you can have a look-see.
thank you !
WT
Signature: Wendy T.

Green Cellar Spider or something else???

Green Cellar Spider or something else???

Dear Wendy,
This sure looks like a Cellar Spider, but the green coloration is certainly unusual.  We are going to post your images and attempt to research this more thoroughly before we weigh in with an opinion, and hopefully one of our readers can either provide a definitive identification or comment on the coloration.

Possibly Green Cellar Spider

Possibly Green Cellar Spider

What's That Bug? does not endorse extermination

Subject: Close ups of the Cellar Spider
Location: Leamington Ontario. Old farm house
September 22, 2014 7:24 am
I’ve looked to see what my little alien being was called and have seen old posts of fuzzy pictures. So i figured for the sake of science and imagination! This guy was hanging from a web. I’m almost positive it’s dead.
Signature: Adrienne

Cellar Spider with Fungus Infection

Cellar Spider with Fungus Infection

Hi Adrienne,
Thanks for adding to the images we have of Cellar Spider infested with Fungus.

What's That Bug? does not endorse extermination

Subject: Unknown Unusual Spider
Location: Stoughton, WI
September 14, 2014 7:51 pm
We’ve got them too!
We have an 103 year old four square and found them in the basement cellar under the porch. We never go there, but we went down there when we found a chipmunk coming in and out from our porch foundation. We went down to flush the chipmunk out and fill in the hole when we discovered these fascinating creatures … albeit creepy!
We live just south of Madison, WI
We had never seen them before.
We have the same questions as everyone else.
Why is this fungus suddenly appearing?
And, is it harmful to humans?
Signature: Mariah

Fungus Riddled Spider

Fungus Riddled Spider

Dear Mariah,
These are probably the best images we have received of Cellar Spiders infested with a deadly fungus.

Seemingly contagious Spider Fungus

Seemingly contagious Spider Fungus

Fungus Infested Spider
Fungus Infested Spider

What's That Bug? does not endorse extermination