Found under my floor.
Mon, Nov 24, 2008 at 3:38 PM
I am busy doing some house renovations and on lifting some of my floor boards I found about 2-3 dozen of these critters standing on the under side of the floor boards. They seem reasonably inactive, most of them are just stood there, 1 or 2 are flying around. Since then I have also spotted 2-3 flying round in the rooms of the house. The conditions under the floor boards are cold and damp, bare soil is present.
I am on the North East coast of the UK, and it is a fairly wet and cold mid November at the minute.
The reason for wanting to know what they are is mild concern that they may be the adult form of something detrimental to wood.
Overall length of the body is around 9-10mm, as scale isn’t clear in the pics.
North East UK
These sure look like Mosquitoes to us, but we can’t figure out what they are doing under the floor boards. Perhaps there is a stagnant water source nearby where they are developing. Perhaps one of our readers can share some insight. The Mosquitoes won’t harm your floor, but the females may bite you and your family and tropical species especially are important disease vectors.
Wow, you have been very busy posting! I turn my back for a week and….wham! LOL!
Ok, the mosquitoes may be overwintering as adults, don’t know. Just contact someone locally in L.A. in vector control at the public health department for a better explanation. Mosquitoes I don’t know that much about, honestly….
Correction Courtesy of Angel van Gulik: January 17, 2017
This one is most likely a Culex pipiens. The shape and coloration of the abdomen, along with indoor overwintering behavior is typical of that species, and it is the most common mosquito found in England. I can’t ID to 100% certainty only because I would have to view the white “stripes” on the abdomen very closely to see whether they come to a pinch along the edge or not to rule out Culex salinarious.