Posted by Stephen on 12-03-2012 11:03
#1
A one-handed photograph. This fly bit and left a tiny red mark.
Naranjo, Costa Rica, 8 March 2012, near a stream and pond, also forest and fields nearby. Length 3.9 mm to apex of wings.
Posted by John Carr on 13-03-2012 14:11
#4
Probably
Simulium (Psilopelmia), a regionally common subgenus with several brightly colored man-eaters.