The Marsh Flies (140 NA spp) are quite large for Acalypterates, are generally
pale bodied and have infuscated patterned wings and projecting antennae.
Larvae are predators reported to feed on snails, snail eggs, and slugs.
Perhaps 20 species have been collected. They are commonly encountered in
marshy areas. Species of Sepedon
(armipes,
fuscipennis,
spinipes...)
are common in the fall, while species of Tetanocera
(clara,
plebeja,
rotundicornis,
unicolor,
vicina)
are common throughout the summer. Elgiva sundewalli (=Hedroneura
rufa) is common in spring and fall. Species of Limnia
are common in summer, while species of
Dictya
(BK spot on WT face) are common in late summer and early fall. Less commonly
collected are species of Pherbellia
(=Melina: nana,
spadix,
maculata).
Infrequently collected are
Poecilographa
decora,
Trypetoptera
canadensis, and
Euthycera arcuata?
