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Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

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TaxonomyBrowse
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Genus Hydropsyche

Caddisfly - Hydropsyche Leavenworth Caddis  - Hydropsyche Hydropsychidae, genus Hydropsyche - Hydropsyche spotted sedge - Hydropsyche Hydropsyche sp. - Hydropsyche Hydropsyche sp. - pupal cases and pupae - voucher specimens, in alcohol - Hydropsyche - female Hydropsyche larvae and retreats - Hydropsyche Northern Caddisfly - Hydropsyche alternans
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Trichoptera (Caddisflies)
Suborder Annulipalpia
Superfamily Hydropsychoidea
Family Hydropsychidae (Netspinning Caddisflies)
Subfamily Hydropsychinae
Genus Hydropsyche
Explanation of Names
Hydropsyche Pictet 1834
Numbers
48 species in North America (nearctica.com)
Size
adult body 10-15 mm
Identification
Adult: head and body with patches of short hair; forewing light to medium brown or grayish, often with speckling, mottling, or patches of pale yellowish or cream color; anal angle of forewing relatively sharp-angled (outer margin of wing may be slightly concave near anal angle)

Larva: many species have distinctive pattern on top of head; dorsal plate on each thoracic segment; rows of bushy gills on abdomen
Range
much of North America
Habitat
larvae in fast-moving portions of streams and rivers; adults on nearby vegetation, and are attracted to artificial light
Food
larvae are filter-feeders, eating algae, detritus, and particles of organic material captured in their nets
Remarks
Larvae spin a concave net, facing upstream, in front of a sheltered retreat in debris or under stones, and wait for food to be captured in the net. Some species build nets under the brink of a waterfall, causing a brown coating of sediment to form on the rocks.
[adapted from How to Know the Insects. Roger Bland. 1978]

Guide page creation based on David Funk's identification of this image to genus level.
Internet References
larva images plus description and biology (Wilfred Laurier U., Ontario)
species in Michigan; list plus distribution (Ethan Bright, U. of Michigan)
preserved adult image of a Eurasian species (Malcolm Storey, Bioimages, UK)
preserved adult images of undetermined Hydropysche species (Michel Flenet, France)
pinned adult image of H. alternans (Insects of Cedar Creek, Minnesota)
larva image of H. alternans plus other Trichoptera photos and references (Trichoptera of Candle Lake, U. of Saskatchewan)
larva image (David Larson, Western Washington U.)
larva image (Michigan Tech U.)