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Family Nemestrinidae - Tangle-veined Flies

Bee fly ... - Neorhynchocephalus sackenii Fly - Neorhynchocephalus volaticus - male Bee Fly??? - Neorhynchocephalus sackenii - female Horse Fly? - Neorhynchocephalus sackenii Neorhynchocephalus volaticus Neorhynchocephalus volaticus? - Neorhynchocephalus volaticus unknown fly - Neohirmoneura bradleyi Neohirmoneura sp.? - Neohirmoneura bradleyi
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Family Nemestrinidae (Tangle-veined Flies)
Explanation of Names
Nemestrinidae Griffith & Pidgeon 1832
6 spp. in 3 genera in our area(1), 300 spp. in 26 genera total(2)
Our spp. 7-14 mm(1)
Bee-like appearance and loud buzz. Bristles lacking but body is covered with hair-like setae. Branches of the medial vein join before the apical margin and end toward the front margin of the wing before the apex.
s. & w. US; BC(1); most diverse and common in sw. US
Adults frequent flowers
Life Cycle
Most are endoparasitoids of grasshoppers(1), Hirmoneurinae parasitize scarab beetles(3)
Rare in NA. Some are considered important in the control of grasshopper populations.
Print References
Bequaert J. (1930) Notes on American Nemestrinidae. Psyche 37:286-298 (Full text)
Bequaert J. (1934) Notes on American Nemestrinidae, second paper. J. New York Ent. Soc. 42: 163-184 (First page)