Numbers
29 species in 10 genera in North America listed at
nearctica.com
Insects of Cedar Creek and Arnett
(1) list 26 North American species
Size
adult body length 14-25 mm; common species usually more than 20 mm
Identification
Adults large (body usually 20 mm or more); forewings gray, brown, or yellowish-brown, sometimes with specks, patches, or other markings. Specific characters:
ocelli (simple eyes) present
no wing hairs clubbed--character shared with some other families
(2)
maxillary palps 4-segmented in males, 5-segmented in females
front tibia has 2 or more spurs, middle tibia has 4
Images showing these characteristics of the adult:
Larval cases typically long, spiral-shaped or ring-shaped, constructed from grass stems, sometimes with small pebbles.
Range
most of North America; species diversity greatest in northeastern states and eastern Canada
Habitat
Larvae usually found in cold lakes and marshes, some live in flowing water.
Print References
Arnett pp. 623-625, family #8 of Trichoptera, order #26
(1)
Borror and White, p. 212, 214
(2)
Marshall, p. 240, pp. 245-246, several photos
(3)Internet References
Insects of Cedar Creek, Minnesota (pinned adult images of 4 species in 3 genera)
live adult image of undetermined Phryganeidae (Phil Myers, U. of Michigan)
larva and case of undetermined Phryganeidae (Jason Neuswanger, New York, troutnut.com)
Contributed by
Cotinis on 20 December, 2004 - 7:33pm
Additional contributions by
Robin McLeodLast updated 4 May, 2007 - 12:33pm
