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Syrphidae
Masarygus planifrons Bréthes
Nomenclature
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Tribe: MicrodontiniGenus: Masarygus
Species:
Masarygus planifrons Bréthes
SUMMARY
The genus Masarygus has only one species, M. planifrons, and it has postmetacoxal bridge complete; abdomen not petiolate; vein R4+5 without an appendix; vein M without appendix and vein M1 never processive; mouthparts absent; scape very short, only as long as broad; antenna inserted dorsally on head, at or above dorsal margin of eye; male basoflagellomere with multiple furcations.
Hull (1949) mentioned some diagnostic characters; one of the most important is the male basoflagellomere divided into four branches (simple in females) and metafemur and metatibia greatly thickened and with bristle-like setae.