I'm wondering what is this bug, I have never seen it before and its behaviour is just weird for me, they just try to climb to the top of the window, then fall and start over again, I see no hole they are going through, they seem capable of flying but they don't.

Bug size comparison Closeup
(click to enlarge images)

Please help me know:

A) Which bug is it?

B) Is it harmful?

C) What business do they have with my window (What is attracting them?)

D) How do I get rid of them?

I'm in Mexico City and it was rainy up until this last days when they arrived, now it is warm, also I have some plants in the room but they don't seem to be interested to go near them.

  • $\begingroup$ Interestingly, one turned up on our kitchen table this afternoon. (Southern UK). Never knowingly seen one before. So, watching. $\endgroup$ Jul 1 at 23:46
  • $\begingroup$ Unsure, but looks to be part of a mating swarm of ants. Not a problem if so. $\endgroup$ Jul 3 at 12:24
  • $\begingroup$ Also unsure, but I think it's some kind of two-winged fly (Diptera); an in-focus photo showing wing venation would be a big help, but I suspect they're no longer around (it's been three weeks since this inquiry; the flight season for this critter might already be over). $\endgroup$ Jul 26 at 3:56


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