Roach-like StonefliesC. Riley Nelson
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Peltoperlidae is one of the smallest families of Plecoptera with approximately 50 species divided between the nearctic, palearctic, and oriental regions. The nymphs are very distinctive in being "roach-like" in appearance. They often occur in very shallow flowing water, such as seeps on rock faces, but are also represented in a wide variety of small streams and rivers. The adutls are recognizable in the field as having small heads when compared to other Systellognathan stoneflies such as perlids.
Synapomorphies for Peltoperlidae: 1, body stout, head prognathous, cockroach-like nymphal body form; 2, male cercal segments fused; 3, nymphal coxae with flap-like lobe.
Claassen, P. W. 1931. Plecoptera nymphs of America (north of Mexico). Thomas Say Found., Entomol. Soc. Amer. 3: 1-199.
Stark, B. P. and K. W. Stewart. 1981. The nearctic genera of Peltoperlidae (Plecoptera). J. Kansas Entomol. Soc. 54: 285-311.
Zwick, P. 1973. Insecta: Plecoptera. Phylogenetisches System und Katalog. Das Tierreich 94. Walter de Gruyter and Co., Berlin. 465 pp.
C. Riley Nelson
Brigham Young University, Provo, Utah, USA
Page copyright © 1996
All Rights Reserved.
Citing this page:
Nelson, C. Riley. 1996. Peltoperlidae. Roach-like Stoneflies. Version 01 January 1996 (under construction). http://tolweb.org/Peltoperlidae/13950/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/