Yoraperla
C. Riley Nelson
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close boxIntroduction
Yoraperla Ricker includes 4 nearctic and 3 oriental species. The nearctic species form a monophyletic clade distinct from the monophyletic oriental species. This distribution is consistent with the hypothesis of clades isolated by an increase in sea level in the Bering Straits. Yoraperla probably arose in the Sierra Nevada of North America and migrated to east Asia along an inland route which included the Rocky Mountains.
Characteristics
Synapomorphies for Yoraperla: 1. Egg wafer shaped. 2. Nymph with pronotal setal rows. 3. Nymph with femoral bristles. 4. Female with lateral bars on subgenital plate. 5. Adult body size is small.
References
Stark, B. P. and C. R. Nelson. 1994. Systematics, phylogeny, and zoogeography of genus Yoraperla (Plecoptera: Peltoperlidae). Entomol. Scandinavica 25: 242-273.
About This Page
C. Riley Nelson
Brigham Young University, Provo, Utah, USA
Page copyright © 1996
All Rights Reserved.
Citing this page:
Nelson, C. Riley. 1996. Yoraperla. Version 01 January 1996 (under construction). http://tolweb.org/Yoraperla/14215/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/
