PerlidaeC. Riley Nelson
This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
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Perlidae consist of about 400 species which are widely distributed in the northern hemisphere with a few genera extending into the southern hemisphere in Africa and South America.
Zwick (1973) listed five synapomorphies for Perlidae as: 1, only 6 individual abdominal ganglia present; 2, in nymphs the paraglossae aare inflated and the mentum broadened; 3, muscle ppm 56 is shifted from pleura to postalar sclerite; 4, muscle ism 24 present; 5, metamerous structure of testes reduced.
Sivec, I., B. P. Stark, and S. Uchida. 1988. Synopsis of the world genera of Perlinae (Plecoptera: Perlidae). Scopolia 16: 1-66.
Stark, B. P. and A. R. Gaufin. 1976. The nearctic genera of Perlidae (Plecoptera). Misc. Publ. Entomol. Soc. Amer. 10: 1-80.
Zwick, P. 1973. Insecta: Plecoptera. Phylogenetisches System und Katalog. Das Tierreich 94. Walter de Gruyter and Co., Berlin. 465 pp.
About This PageI thank Bill Stark for his help with this and many other pages in this series.
C. Riley Nelson
Brigham Young University, Provo, Utah, USA
Page copyright © 1996
All Rights Reserved.
Citing this page:
Nelson, C. Riley. 1996. Perlidae. Version 01 January 1996 (under construction). http://tolweb.org/Perlidae/13953/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/