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Trichoptera: Psychomyiidae of Gunnison County, Colorado

Psychomyia flavida
Trumpet-net Caddisflies, Dark purple-breasted sedge

Hagen, 1861
Updated 8 July 2012

Good Links

Other Websites:
Illustration - University of Alberta Entomology Collection Species page
     Has illustration of male genitalia, description, habitat information, range and more.


Armitage,BJ; Hamilton,SW 1990 Diagnostic atlas of the North American caddisfly adults. II. Ecnomidae, Polycentropodidae, Psychomyiidae, and Xiphocentronidae. Caddis Press, Anthens, Alabama (Columbus, Ohio).

Coffman,WP, Cummns,KW, and Wuycheck,JC 1971 Energy flow in a woodland stream ecosystem: I. Tissue support trophic structure of autumnal community. Archiv für Hydrobiologie 68(2) 232-276.

Djernæs,M and Sperling,FAH 2012 Exploring a key synapomorphy: correlations between structure and function in the sternum V glands of Trichoptera and Lepidoptera (Insecta). Biological Journal of the Linnean Society, 106: 561-579.
     Abstract: "I investigated the sternum V gland in 38 families of Trichoptera, and found it to be present in 25 of these. I found that the gland is generally present in Annulipalpia, except Dipseudopsidae, and in Spicipalpia. It is widespread in Plenitentoria, while it is often absent in Brevitentoria, especially in males. The opening is slit-like and U or crescent-shaped. There is significant variation in the cuticular structures associated with the opening ranging from no apparent modification, over scaly patches to elaborate protuberances. Gland opening muscles are associated with the gland in all families except Psychomyiidae, and are divided into 2 distinct types: One originating on the front edge of sternum VI found in Philopotamidae, Rhyacophilidae, Glossosomatidae and Hydroptilidae; and 1 originating on the cuticle of sternum V found in all other trichopterans. "
Taxa Treatments Gland Gland opening/ Evaporative structures Opening Muscle Reservoir shape Reservoir Musculature Arrangement of secretory cells
Psychomyia flavida Hagen F wholemount, ext. & int. SEM, histology present in membranous area between sternites absent round muscle fibres across reservoir incl. secretory tissue + ‘sunburst’ layer around reservoir

...Muscle fibres often surround the reservoir, sometimes also the secretory tissue. Exceptions are found in Psychomyiidae (no opening muscle), female Philopotamidae (fenestra with separate glandular complex), Agathiphagidae (several unique features), Neopseustidae and Nepticulidae (gland present without gland opening)."

Flint, O. S., Jr. 1964 Notes on some Nearctic Psychomyiidae with special reference to their larvae (Trichoptera). Proceedings of the United States National Museum 115.

Hagen,HA 1861 Synopsis of the Neuroptera of North America with a list of South American species. Smithsonian Miscellaneous Collections 4, 1-344.
     Hagen's Glossary (pdf)

Lehmkuhl,DM and Kerst,CD 1979 Zoogeographical affinities and identification of central Arctic caddisflies (Trichoptera). Musk-Ox 25: 12-28.

Li, Y. J., and J. C. Morse. 1997 Phylogeny and classification of Psychomyiidae (Trichoptera) genera. Pages 271-276 in Proceedings of the 8th International Sympolium on Trichoptera (R. W. Holzenthal, and O. S. Flint, Jr., eds.). Ohio Biological Survey, Columbus, Ohio.

Ross,HH 1944 The Caddis Flies, or Trichoptera, of Illinois. Natural History Survey of Illinois 23 Los Angeles, CA. 326 pages.
     Describes the larvae of P. flavida.

Schmid, F. 1983 Revision des trichopteres Canadiens. III. Les Hyalopsychidae, Psychomyiidae, Goeride, Brachycentridae, Sericostomatidae, Helicopsychidae, Beraeidae, Odontoceridae, Calamoceratidae et Molannidae. Memoires de la societe entomologique du Canada. Volume 125, 109 pages.

Swegman, BG 1978. The occurrence of an intersex individual of Psychomyia flavida (Trichoptera). Entomological News 89:187-188.

The United States Geological Survey (USGS) National Water Quality Assessment Data Warehouse (NAWQA) shows this species is present in Gunnison County. Data as of 1Sep2005

Brown, WS 2005 Trichoptera (Caddisflies) of Gunnison County, Colorado, USA