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Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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Family Opomyzidae

spot-winged fly - Geomyza tripunctata Opomyzid Fly - Opomyza Better images of possible Geomyza? - Geomyza tripunctata Opomyzidae - Geomyza tripunctata Elgiva-like - Opomyza germinationis fly - Geomyza tripunctata Diastata sp. (?) - Geomyza tripunctata Geomyza balachowskyi ?? - Geomyza balachowskyi
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Acalyptratae")
Family Opomyzidae
Synonyms and other taxonomic changes
revised in (1)
Explanation of Names
Opomyzidae Fallén 1820
Numbers
13 spp. in 3 genera in our area(2), ~60 spp. in 4 genera total(3)
Size
1-5 mm(2)
Identification
Wings with vein Sc incomplete (but R1 appears to swollen at the point of the subcostal break), humeral costal break absent, subcostal break present, cell cup present, head with 1 pair of orbital setae, postocellar setae usually absent, but if present, divergent, no distinct vibrissa developed, tibiae without dorsal preapical setae.
Anomalochaeta guttipennis: boreal, postocellar setae present, wings mostly dark with ~10 round hyaline spots
Geomyza: widespread, no postocellar setae, wings narrow, disc of scutellum bare, with shortened pair of basal setae
Opomyza: widespread, no postocellar setae, wings normal, disc of scutellum setulose, basal and apical scutellar setae subequal
Range
adults on grass in moist areas; larvae probably stem borers(2)
Food
Grasses including cereal crops
Internet References