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Genus Eulonchus

Eulonchus - male Eulonchus species? - Eulonchus Small-headed Fly - Eulonchus tristis acrocerid - Eulonchus sapphirinus acrocerid - Eulonchus tristis Fly - Eulonchus small-headed fly - Eulonchus marginatus small-headed fly - Eulonchus marginatus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Orthorrhapha)
Family Acroceridae (Small-headed Flies)
Genus Eulonchus
Identification
Proboscis well-developed, at rest held below body and extending to mid-thorax or well beyond, depending on species.
Antennae inserted near middle of head, with eyes contiguous both above and below antennae.
Print References
Sabroski, Curtis W. , "A Further Contribution to the Classification of the North American Spider Parasites of the Family Acroceratidae (Diptera)". American Midland Naturalist, Vol. 39, No. 2 (Mar., 1948), pp. 382-430
Schlinger, E. I. , "A review of the genus Eulonchus Gerstaecker. Part I. The species of the Smaragdinus group (Diptera: Acroceridae)". Ann. Ent. Soc. Amer. 53 (1960): 416-22.
Cole, Frank R. and Evert I. Schlinger, "The Flies of Western North America"(1), (1969), pp 220-221.
MacAlpine et al, "Manual of Nearctic Diptera(2)", Vol. 1, (1981), pg 583.
Works Cited
1.The Flies of Western North America
By Frank R. Cole and Evert I. Schlinger
2.Manual of Nearctic Diptera Volume 1
By Varies for each chapter; edited by J.F. McAlpine, B.V. Petersen, G.E. Shewell, H.J. Teskey, J.R. Vockeroth, D.M. Wood.