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Keith Bayless
Containing group: Beridinae


Beris are 5-9 mm long and most species have a metallic green to blue thorax. The genus is Holarctic in distribution, with some species in Southeast Asia.  Adults of Beris in North America have been collected near streams and lakes, resting on vegetation (Woodley 1995). Larval Beris are found in moist leaf litter and decaying vegetation. The larvae of Beris clavipes and B. vallata live in moss (Rozkošný 1998). The habits of adults and larvae of European Beris species are summarized in Rozkošný (1982).


Beris is distinguished from all other genera in the subfamily by the reduced, one-segmented palpus (Woodley 1995).


Rozkošný, R. 1982. A biosystematic study of the European Stratiomyidae (Diptera). Volume 1. Introduction, Beridinae, Sargunae, and Stratiomyinae. Dr. W. Junk, The Hague, Boston 1-401

Rozkošný, R. 1998. Chapter 24. Family Stratiomyidae. Manual Palaearct. Dipt. 2: 387-411.

Stuke, J.-H. 2004. Eine neue Art der Gattung Beris Latreille, 1802 aus Mitteleuropa (Diptera: Stratiomyidae). Beitr. Ent. 54:333-342.

Woodley, N. E. 1995. The genera of Beridinae (Diptera: Stratiomyidae). Memoirs of En. Soc. Wash. 16 1-231.

Woodley, N. E. 2001. A World Catalog of the Stratiomyidae (Insecta: Diptera). Myia 11: 1-473. Backhuys Publishers, Leiden.

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Keith Bayless
North Carolina State University, Raleigh, North Carolina, USA

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Citing this page:

Bayless, Keith. 2008. Beris. Version 28 September 2008 (under construction). http://tolweb.org/Beris/108501/2008.09.28 in The Tree of Life Web Project, http://tolweb.org/

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