This is the only Eastern species of Cinygmula. It may produce fishable hatches in places but it is not a generally important mayfly. Where & When
» Species subaequalis (Small Gordon Quill)
Region:Cinygmula subaequalis is widespread but only locally abundant. Caucci and Nastasi in their collections for Hatches II were unable to find any specimens, but Fred Arbona in Mayflies, the Angler, and the Trout mentions consistent subaequalis hatches in the mountains of Pennsylvania, New York, and Vermont.
EastTime Of Year (?):
May and June
Pictures of 2 Mayfly Specimens in the Species Cinygmula subaequalis:
Cinygmula subaequalis (Small Gordon Quill) Mayfly Nymph
View 3 PicturesI had heard reports of a bright red heptageniid nymph before but never seen one until I found this early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) specimen in a very high water quality small stream in the Catskills.
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