**Caddisfly Species Psychomyia flavida (Dinky Purple Breasted Sedge)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Trichoptera (Caddisflies)

» Family Psychomyiidae

» Genus Psychomyia (Dinky Purple Breasted Sedges)

» Species flavida (Dinky Purple Breasted Sedge)

Common Name

Match	Common Name
	Dinky Purple Breasted Sedge

These small caddisflies are noteworthy because they are widespread and can be extremely abundant, and they are capable of parthenogenesis (Parthenogenesis: In some species of insects and other living things, such as the mayfly species Ameletus ludens, reproduction can take place without fertilization by a male. This process is called parthenogenesis.).

Where & When

Regions: East, Midwest, West

Time Of Year (?): June through August

Preferred Waters: Most abundant in large-river rapids

This species is most abundant in the East and Midwest, but Gary LaFontaine discovered that there are also good populations in Montana. He mentions in Caddisflies that this can be the most abundant species of caddisfly on many rivers.

Hatching Behavior

Time Of Day (?): Usually after dark; may be sporadic all day on cloudy days

The emergence can be very intense. Flights of adults are almost all female because they don't require males to reproduce.

Larva & Pupa Biology

Current Speed: Fast

Environmental Tolerance: Best in cold water

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Jargon Defined:

Emergence: The transformation of a nymph or pupa into the adult winged stage of an insect. The term may refer to the emergence of an individual, or the daily or yearly event in which all individuals of a species emerge.

Parthenogenesis: In some species of insects and other living things, such as the mayfly species Ameletus ludens, reproduction can take place without fertilization by a male. This process is called parthenogenesis.

Useful References:

LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.

Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.