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Isonychia (Slate Drakes) Mayfly Nymph Pictures

Classification
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Isonychiidae (Slate Drakes)
» Genus Isonychia (Slate Drakes)
 This smaller Isonychia nymph was caught with a bunch of bicolor specimens, but it does not have the fluffy spine structure at the base of its gills. This might mean it's Isonychia sayi, or it might just be a bicolor nymph too young to have developed those structures.

This mayfly was collected from the Upper Midwest on January 13th, 2004 and added to Troutnut.com on January 25th, 2006.

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CameraOlympus C740UZ
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CameraOlympus C740UZ
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CameraOlympus C740UZ

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