Cinygmula reticulata (Western Ginger Quill) Mayfly Nymph Pictures

Mayflies

Caddisflies

Stoneflies

Classification

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Heptageniidae (March Browns, Cahills, Quill Gordons)

» Genus Cinygmula (Dark Red Quills)

» Species reticulata (Western Ginger Quill)

I collected several live specimens of nymphs and reared them to the imago (Imago: The sexually mature adult stage of the mayfly is called the imago by scientists and the spinner by anglers.) stage. They were C. reticulata. The interesting thing is they were collected in May and were emerging along with Rhithrogena (March Brown). This seems to be an overlooked hatch since in some rivers it emerges very early, before runoff.

This mayfly was collected from the Big Thompson River on May 10th, 2009 and added to Troutnut.com on June 26th, 2011.

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Cinygmula reticulata (Western Ginger Quill) Mayfly Nymph from the Big Thompson River in Montana

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Jargon Defined:

Imago: The sexually mature adult stage of the mayfly is called the imago by scientists and the spinner by anglers.

Nymphs: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).