» Family Siphlonuridae (Gray Drakes)
3 genera (Edmundsius, Parameletus, Siphlonisca)
aren't included.
Common Name
These large, slender mayflies have nymphs of the swimming type, like Isonychiidae and Metretopodidae, and they generally inhabit slow water. See Siphlonurus for details -- it is the only genus of known importance to anglers.
Pictures of 22 Mayfly Specimens in the Family Siphlonuridae:
Siphlonurus quebecensis (Gray Drake) Mayfly Nymph
View 5 PicturesI photographed this nymph in the middle of molting between one 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.) and the next (not hatching). 3 Underwater Pictures of Siphlonuridae Mayflies:
Date AddedJun 5, 2007
CameraPENTAX Optio WPi
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