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Genus Ogcodes

small-headed fly - Ogcodes dispar - male - female Acrocerid - Ogcodes eugonatus - male Ogcodes - Ogcodes canadensis Tiny Fly? - Ogcodes Family Acroceridae - Ogcodes Ogcodes dispar - male Ogcodes Ogcodes
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Family Acroceridae (Small-headed Flies)
Genus Ogcodes
Synonyms and other taxonomic changes
revised in(1)
Explanation of Names
Ogcodes Latreille 1797
Numbers
17 described species in 2 subgenera in our area(2), ~90 spp. in 3 subgenera total
Identification
(1)[Cite:1029610](3)
Eyes bare, holoptic in both sexes;
Antenna near bottom of head, flagellum short and rod-like with 1-6 apical setae;
Mouthparts absent, no proboscis;
Abdominal segments typically with posterior bands of uniform width, generally wider in males (details below);
Wing venation distinctive: veins appearing reduced and intermittent, more or less parallel and "streaked", with few or no closed cells;
Tibia not produced apically(2).
Key to species in(1)
Range
worldwide
Remarks
Sexes differ in the form of bands on tergites(3): in males, fasciae well-defined, rather wide, ⅓-⅔ the length of the segment, those on segments 4 & 5 usually wider than those on segments 2 & 3; fasciae in females are somewhat vague, narrow to linear, faint, or absent, the abdominal dorsum looking dark -- see figs 39(♀) & 40(♂) in [Cite:1029610]
Works Cited
1.A revision of the genus Ogcodes Latreille with particular reference to species of the Western Hemisphere
Schlinger E.I. 1960. Proc. U.S. Nat. Mus. 111: 227-336.
2.Manual of Nearctic Diptera Volume 1
Varies for each chapter; edited by J.F. McAlpine, B.V. Petersen, G.E. Shewell, H.J. Teskey, J.R. Vockeroth, D.M. Wood. 1981. Research Branch Agriculture Canada.
3.A revision of the American spider parasites of the genera Ogcodes and Acrocera (Diptera, Acroceridae)
Sabrosky C.W. 1944. Am. Midl. Nat. 31: 385-413.