Genus Ogcodes

Classification · Synonyms and other taxonomic changes · Explanation of Names · Numbers · Identification · Range · Remarks · Works Cited

small-headed fly - Ogcodes dispar - male - female

Acroceridae - Small-headed Fly? - Ogcodes incultus

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)(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)

Range

worldwide

Remarks

Sexes differ in the form of bands on tergites(4): 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 (3)

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.

Contributed by Keith Bayless on 15 February, 2007 - 12:36am
Additional contributions by Aaron Schusteff, v belov
Last updated 29 July, 2023 - 10:45pm

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