Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

TaxonomyBrowse
Info
ImagesLinksBooksData

Subfamily Diaphorinae

Camillidae? - Chrysotus picticornis Agromyzidae Long-legged Fly Tiny Tiny Fly Dolichopodidae ? Micro fly - Chrysotus tennesseensis Fly - Chrysotus - male Dolichopodidae
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Superfamily Empidoidea
Family Dolichopodidae (Longlegged Flies)
Subfamily Diaphorinae
Size
Variable, but the common species are 2-3 mm long.
Identification
Normally with no preapical bristles on mid and hind femora, wings slightly spread at rest, hind margin of scutum not strongly flattened, first antenna segment without hairs, and wing vein M unbranched and nearly parallel to R4+5.
Remarks
One of the three commonly encountered subfamilies (along with Dolichopodinae and Sciapodinae).
BugGuide follows the North American catalog(1) which has six genera, considering Achradocera but not Lyroneurus to be distinct from Chrysotus.
Achradocera is a species group of Chrysotus currently given generic status. It is recognized by the shape of the male antennae. North American species also have a distinctive color pattern on the legs.
Argyra is normally easy to recognize by the silvery patches, large male antennae, and S-shaped vein M, although there are exceptions.
Asyndetus is recognized by the weak vein M and costa ending at R4+5.
Chrysotus and Diaphorus are ill-defined genera containing most of the species in the subfamily. Species move back and forth between them and identification is difficult. Male Diaphorus normally have long bristles on the tip of the abdomen.
Keirosoma is not represented in the guide.
Works Cited
1.Catalog of the Dolichopodidae (Diptera) of America north of Mexico
Marc A. A. Pollet et al. 2003. American Museum of Natural History.