Chironomidae (=midges) look similar to mosquitos, however they do not sting.
The wings of midges are shorter than their body, while mosquito wings are slightly longer than their body.
Furthermore, in the resting position Chironomidae raise the forelegs, while mosquitos raise the rear legs.

Ventral view

Dorsal view

Body length approx. 3,8 mm.

Head in ventral view and antennae detail

Abdomen in ventral view. The shrunk hind wings called halteres (the small knobbed structures on each side), are clearly visible