Larvae of the genus Cheumatopsyche (Trichoptera:Hydropsychidae) are a abundant and probably significant ecological component of freshwater lotic ecosystems worldwide, with many species inhabiting streams with elevated organic pollution. The varying tolerance levels among these species necessitate species-level identification for accurate water-quality assessment. However, past workers have had difficulty separating the Nearctic species in the larval stage. This research presents progress on the goal towards identification of larval Cheumatopsyche. Chaetotaxal and cuticular characters are delimited for 7 larval morphotypes, all of which have been putatively associated with adults. The Nearctic phylogeny of Cheumatopsyche is revised, including 5 species described after 1987. The distribution of larval characters is hypothesized with reference to the phylogeny, including 3 main species groups. Biogeographic relationships for Nearctic areas of endemism are inferred cladistically.
|Advisor:||Morse, John C.|
|Commitee:||Adler, Peter H., Brown, Bryan L.|
|Department:||Entomology, Soils and Plant Sciences|
|School Location:||United States -- South Carolina|
|Source:||MAI 49/06M, Masters Abstracts International|
|Keywords:||Caddisfly, Cheumatopsyche, Hydropsychidae, Larvae, Taxonomy, Trichoptera|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
supplemental files is subject to the ProQuest Terms and Conditions of use.