Explanation of Names
Plecia nearctica Hardy, 1940
black ventrally and laterally on the thorax vs. P. americana (see below)
along se US coast (TX-FL-SC) (BG data)
separate flight periods in the spring and fall (BG data)
Large swarms along the Gulf Coast are attracted to roads, where they are considered a nuisance pest.
Plecia americana is red ventrally on the thorax and does not fly in fall.
Hardy DE. 1940. Studies in New World Plecia (Bibionidae: Diptera). Part I. Journal of the Kansas Entomological Society 13: 15-27.
- H.A. Denmark and F.W. Mead, 2012