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Keith Bayless
Containing group: Pachygastrinae


Pachygaster is a nearly cosmopolitan genus. Two species are native to Irian Jaya (Indonesia); two more are native to India, Malaysia, and Thailand; five species are endemic to Europe and Eastern Russia; two species are found around the Mediterranean Sea;  P. wirthi is found on Antigua and Dominica; P. flavipennis has been collected in Honduras; P. montana is native to Arizona, New Mexico, and Mexico; and P. characta is found in Texas (Woodley 2001). The larvae of Pachygaster piriventris, from India and Malaysia, have been found at internodes of decaying bamboo (Woodley 2001). Pachygaster antiquus and P. hymenaea are known from Mexican and Dominican amber, respectively (Grund & Hauser 2005).


Pachygaster can be distinguished from other Nearctic Pachygastrinae by the following characteristics: Scutellum without distinct posterior rim; hairs on sides of scutum not flattened; R4 and R5 separate (James 1981).


Grund, M. and M. Hauser. 2005. Pachygaster hymenaea sp. nov. and P. antiqua James, 1971 (Diptera: Stratiomyidae) in Neotropical ambers. Zootaxa 1061:29-34.

James, M. T. 1981. Chapter 36: Stratiomyidae. Manual of Nearctic Diptera. 1:497-511

Krivosheina, N. P. 2004. A review of the stratiomyid-fly genera Neopachygaster Austen, Eupachygaster Kertesz and Pachygaster Meigen (Diptera, Stratiomyidae) from Russia and neighbouring countries. Ent. Obozr. 83:490-506.

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. Pachygaster. Version 29 September 2008 (under construction). http://tolweb.org/Pachygaster/108646/2008.09.29 in The Tree of Life Web Project, http://tolweb.org/

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