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Family Apsilocephalidae

Apsilocephala
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Superfamily Asiloidea
Family Apsilocephalidae
Numbers
A single species in our area(1), 3 spp. in 3 genera worldwide(2)
Identification
Adults:
Head not hemispherical, vertex not or only slightly concave, eyes usually holoptic in male, eyes usually bare, 3 ocelli present on vertex or slightly anterior to vertex, ocellar tubercle usually elevated above dorsal level of eyes, antennae sometimes set on frontal protuberance, scape usually setose, pedicel usually with a ring or two of short setae, first flagellomere at most with setae on basal third, stylus of 1-2 segments and a terminal or subterminal bristle, set apically or subapically on basal flagellomere, elongate and prominent in some genera, almost undetectable in others, face relatively short, sometimes hairy but without a mystax, lateral face hairy, post ocular setae usually present, palpus hairy and not prominent, proboscis short and stout to long and slender, usually dull pruinose, labella usually well-developed and conspicuous; hypopharynx not protrusible and developed for piercing
Scutellum prominent, often without hairs, 1 pair of postalar setae, 1-6 pairs of notopleural setae, 1-2 pairs of supra alar setae, 5 or more pairs of dorsocentral setae, usually 0-3 pairs of scutellar setae, rarely 4
Femora bare to heavily setose, tibiae and tarsi setulose in longitudinal rows, fore tibiae lacking anteroventral setae, claw with 2 pulvilli and a seta-like central empodium, or with empodium absent
Wing with branches of M not peculiarly curved, but if forwardly bent then not ending freely in wing margin, spurious vein undeveloped, C usually continuing around wing, R4+5 usually furcate, wing with cell bm truncate distally and with four corners from which arise four separate veins, namely M1+2, M3, CuA1, CuA2, M1 usually not curved forward in a crossvein-like manner, but if so then joining a furcate R4+5, base of cell m3 truncate, CuA2 reaching wing margin near A1 or or joining A1 near wing margin
Male aedeagus long and coiled, with articulated surstyli
Range
North America (sw. US) + Tasmania & New Zealand(3)