|scientific name Arctopsyche |
common name Great Gray Spotted Sedge
Clear, cold streams/rivers on gravel/boulder bottoms. Mountain/foothill, boreal forest streams.
Adults are flying in late May to mid-August.
Adult eyes are glaborous. The third article of the maxillary palp is twice as long as wide. Spur formula 2, 4, 4. There are two species of Arctopsyche, in Canada: A. grandis and A. ladogensis, both can be found in Alberta (Nimmo, 1987).
The silk retreats of the larvae are the largest known in Arctopyschidae and Hydropsychidae (Wiggins, 1996).
The larvae are filter feeders and may possible ingest animal matter as well.
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