Tachina grossa - Giant Tachinid Fly, Finland

''Tachina grossa'' or giant tachinid fly is a very large tachinid fly found throughout most of Western Europe. At 15–19 millimetres it is one of the largest species of fly throughout much of its range and is the largest tachinid in Europe. It is very distinctive, being hairy and with a black thorax and abdomen, and a bright yellow head.

Like most tachinid flies, the female lays her eggs on other living insect larva, the fly larvae then develop inside the living host, devouring it and.. more