The internet is a wonderful thing for the amateur naturalist, but sometimes frustrating when you can't find what you're looking for. In my case I was after a big page full of every type of UK wasp, with pictures and vital differentiating features. But I couldn't find such a page, and I couldn't identify this specimen. Of course it might very not be a wasp – just a fly of some other sort. Another angle below. Do you know what it is? I'll keep looking and will update this post if I figure it out. It seems to have its abdomen curled up beneath it, I know not why.



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  1. Sawfly? Gall wasp? “Biorhiza pallida” looks orange in my little insect book!

  2. I don’t think it’s Biorhiza pallida as that has dark eyes and doesn’t quite look the same overall.

  3. We had an identical one in our house just now (Woodgate, near Bognor Regis). Only one set of wings, so that would indicate a fly (wasps have two pairs). Definitely not a sawfly or gall wasp

  4. I think you’re right that it’s a fly. I think I happened across a picture of it the other night while researching mud dauber wasps, but I didn’t make the connection at the time.

  5. it looks like a fly mimiking a wasp to me as i can only see 1 pair of wings

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