These flying insects are in every room in my house.
They measure no more than 2 millimetres in length - the photo I've supplied shows they have what I think is a stripe across the wings.
They are impossible to catch and kill as they fly extremely fast, and only land on surfaces to fly off within a second.
We already have fungus gnats in the house, and I'm at my wits end now. These things often fly into my face when I go from room to room and I'm itching just looking at the photo (they look nothing like this in normal eye view)
Please can you advise what bugs they are so I can look into methods of curing the problem?
Above my post it says:
This thread is not a question, you have 15 minutes after posting a thread to mark it as a question.
I cannot see how I do this, and my post is a question.
It may be a moth fly. Have a look at this picture and see if you agree -
I think you might be correct, as by Googling, these flies measure 1.5 - 4mm length, are attracted to light, tend to be nocturnal, and are identifiable by making short hopping flights when disturbed (they do this when I try to catch the ones sat on the wall)
The photos of moth flies on Google are darkish brown, very hairy with long curled antennae though, so they may be a different type of insect?
Moth flies are drain flies though (I thought mine had come into the house on some new house plants I had bought) so I will put some sticky traps over plug holes and see what happens!
Many thanks for your help
Well, I've just googled and I see what you mean, though there are some light ones. The length of the antennae of yours is a problem though - they didn't seem quite long enough. If you could get a better photo it might be possible to prove / disprove moth flies.
Will do! I've just caught a much larger one in a glass jar - I just need it to sit still so I can take a photo
Well, they don't really help. You could send some in to the Natural History Museum for identification if you were really concerned.
Actually the length of the antennae isn't really a problem because some species have shorter antennae than others. See -
Psychoda alternata is a common species, apparently
I would just concur that they are moth flies, Psychodidae, but not one that I recognise (not that I recognise many of the UK species). The larvae feed on decaying organic materials, this can be compost bins (my wormery is full of them), accumulations in drains or algae/moulds associated with bathroom/kitchen sinks/baths overflows. They are not really a pest but can be a nuisance if you have them in numbers - occasionally i have had one or two land in my cooking .... but I just stir them in as a little bonus (but dont tell my dinner guests or my wife and children )
I still wonder if the originating fly (or flies) came in on a new (and quite rare) cactus type houseplant that I believe is mexican in origin. This may be why the fly species is a bit different to those you recognise?
Anyhow, I'll see how things go and I'll make sure that I keep an eye on drains etc.
Enjoy chomping on your moth flies (eewwwww! the pics of them make me itch all over!)
Hi again Jaguarondi
When I mentioned the antennae, I meant that I think my critters ARE moth flies, as they are looking more like the flies in your first reply
Now I don't know if this was their feeding source, but my bathroom basin was slowish to drain, so I poured drain cleaner down it yesterday afternoon and the blockage has gone. There seems to be less flies already, though this could be wishful thinking and a fluke!
Thank you very much for your help