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Ephemera simulans (Brown Drake) Mayfly Nymph Pictures

 Here's an unusually small 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.) nymph.

This mayfly was collected from unknown on March 1st, 2004 and added to Troutnut.com on January 25th, 2006.

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Ephemera simulans (Brown Drake) Mayfly Nymph from unknown in Wisconsin

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