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Ephemerella invaria (Sulphur Dun) Mayfly Nymph Pictures

 This small Ephemerella invaria nymph was at least a month away from emergence.

This mayfly was collected from the Beaverkill River on April 19th, 2006 and added to on April 21st, 2006.

Recent Discussions of this Nymph

Invaria nymph 18 Replies »
Posted by Martinlf on Dec 23, 2006
Last reply on Nov 30, 2009 by Oldredbarn
OK, the invaria nymph shows the same lighter darker dorsal bandsand the solid dark ventral color on the abdomen as the subvaria, though its size makes me wonder if it is immature and may darken. For many considering this kind of detail will be superfluous, but for some of us nuts who like to fritter away the hours considering the possible uses of such information, this may confirm the claims of those who like to leave streaks in when blending fur, or perhaps even the claims of Caucci and Nastasi who promote a spectrumized dubbing.

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