Wing-spot
Guides
Bibio femoratus
March fly, Lovebug
Bibio femoratus is a medium-sized fly in the family Bibionidae, commonly known as the March fly or lovebug in the southeastern United States. Adults are recognized by their black bodies with orange or red thorax and legs, and a diagnostic dark spot on the leading edge of the wing. The species forms conspicuous mating swarms in early spring, with pairs remaining coupled for extended periods. Larvae develop in soil and feed on decaying organic matter.