Life cycle of the net-spinning caddisfly, Cheumatopsyche analis (Banks) (Trichoptera: Hydropsychidae), in two small Front Range urban streams, Fort Collins, Colorado

Authors

Robert E. Zuellig, Colorado State University, Fort Collins
Boris C. Kondratieff, Colorado State University, Fort Collins
Richard A. Thorp, Colorado State University, Fort Collins

Abstract

The life cycle of Cheumatopsyche analis (Banks) is described from 2 urban streams located in north central Colorado. Larvae were collected every 15 days during spring, summer, and fall and every 30 days in winter from August 1999 through August 2000. A total of 8652 larvae were collected, and head capsules were measured to the nearest 0.01 mm. The life cycle of C. analis at both sites appears to be partially bivoltine with a long, almost continuous period of recruitment after peak emergence in June. Some offspring from the early generation that emerges in May probably emerge as adults in September, while the remainder of the population overwinter as instars III through V. Life cycle patterns for C. analis in these 2 urban streams were most similar to other populations of Cheumatopsyche from Virginia.

Recommended Citation

Zuellig, Robert E.; Kondratieff, Boris C.; and Thorp, Richard A. (2004) "Life cycle of the net-spinning caddisfly, Cheumatopsyche analis (Banks) (Trichoptera: Hydropsychidae), in two small Front Range urban streams, Fort Collins, Colorado," Western North American Naturalist: Vol. 64: No. 4, Article 10.
Available at: https://scholarsarchive.byu.edu/wnan/vol64/iss4/10