WA Mayfly Descriptions

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Flyfishing Entomology

WA Mayfly Description

Taxonomic Name (Common Name)	Larva (Nymph)	Subimago (Dun) Imago (Spinner)
Heptageniidae (Flatheaded Mayfly)	Flattened body; flattened horizontally oriented head; eyes & antennae visible from above; sprawling legs; gills on ab segs 1-7, most with tufts at base; 2 or 3 tails.	2 tails and large hind wings; 2 pairs of cubital intercalary veins present in FWs; 2 tails.

Taxonomic Name
(Common Name)

Larva (Nymph)

Subimago (Dun)
Imago (Spinner)

Cinygmula
(Blue-winged Red Quill; Red Quill. )

mature larva (nymph)

subimago (dun) - male

imago (spinner) - male

Cinygmula

Front margin of head w/distinct notch in midline; maxillary palps are often visible from above sticking out from head; gills of abdominal segments 1-7 all similar, plate-like w/o fibrils; femora unbanded.

First segment of fore tarsi half length of second.

Cinygmula gartrelli

Cinygmula mimus

Cinygmula par

Cinygmula ramaleyi

Cinygmula reticulata

Cinygmula tarda

Cinygmula uniformis

State of Washington distribution is based on:
Mayflies (Ephemeroptera) of the far western United States (Part I: Washington) by M. D. Meyer & W. P. McCafferty,
and augmented by A DNA Barcode Library for North American Ephemeroptera: etc. by Webb, Jacobus, Funk, et. al.

Created: 08/16/2013 Last modified: 12/07/2014 www.FlyfishingEntomology.com