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Genus Ogcodes

Fly - Ogcodes dispar - female okay FLY people whos this? - Ogcodes dispar Acrocerid - Ogcodes Acrocerid - Ogcodes eugonatus - male Diptera - Ogcodes borealis Acroceridae - Small-headed Fly? - Ogcodes incultus   - Ogcodes Acroceridae, Ogcodes - Ogcodes
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
17 described species in 2 subgenera in our area(2)
Ogcodes have the following characters:(1)(3)(4)
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)
Sexes differ in the form of bands ("fasciae") on tergites(4): "Males have comparatively wide, definite fasciae, those on the fourth and fifth segments usually wider than those on the second and third, the width of a fascia being from one-third or less to as much as two thirds the length of the segment. The fasciae in the females are somewhat indefinite, always narrow to linear or sometimes absent or only faintly indicated, the abdominal dorsum thereby appearing quite dark. The difference is well represented in figs 39(♀) and 40(♂) of Cole (1919)(3)."
Internet References
Types specimens of Ogcodes spp. (Cal. Acad. Sci.)
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.The dipterous family Cyrtidae in North America
Cole F.R. 1919. Trans. Am. Entomol. Soc. 45: 1-79.
4.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.