ChloroperlidaeC. Riley Nelson
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Chloroperlidae consists of approximately 110 species divided between the nearctic, palearctic, and oriental regions. The nymphs are distinctive in having quite short legs and shortened cerci. Some genera are a common part of the general benthos in streams and rivers while others, especially the Paraperlinae, are exclusively hyporheic.
Zwick (1973) lists two synapomorphies of the Chloroperlidae as: 1, last palpal segment minute, conical, inserted asymmetrically on second to las segment; 2, caecal sacs of gut reduced. He lists the synapomorphy for the Paraperlinae as having the head elongate, with the temples parallel. He lists three synapomorphies for the Chloroperlinae: 1, tearing mandible of nymph secondarily present in adult; 2, distal portion of male epiproct no longer directed posteriorly but sharply bent to point forwar: basal rod flat and wide, largely fused to front margin of 10th segment; 3, anal fan of wing much reduced. Surdick (1985) presents phylogenetic information for the nearctic genera.
Nelson, C. H. 1984. Numerical cladistic analysis of phylogenetic relationships in Plecoptera. Ann. Entomol. Soc. Amer. 77: 466-473.
Surdick, R. F. 1985. Nearctic genera of Chloroperlinae (Plecoptera: Chloroperlidae). Illinois Biol. Monog. 54: 1-146.
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. Chloroperlidae. Version 01 January 1996 (under construction). http://tolweb.org/Chloroperlidae/13954/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/