Black flies (Diptera: Simuliidae) and a new species of caddisfly (Trichoptera: Hydropsychidae) in a northwestern Georgia cave stream

摘要

Larvae of Prosimulium saltus, Simulium parnassum (Diptera: Simuliidae) and a new species of Diplectrona (Trichoptera: Hydropsychidae), were collected in 1998 from a cave stream in northwestern Georgia, USA. Simuliidae have not previously been reported from Nearctic cave streams. The cavernicolous simuliids were morphologically similar to those collected on the surface but with less pigmentation. The collection of P. sa#us is a state record and marks the known southern extent of the species. The adult male, larva, and pupa of the new Diplectrona are described and compared with other known Diplectrona species.