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Family Ephemerellidae - Spiny Crawler Mayflies

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Unknown mayfly nymph - Caudatella Caudatella heterocaudata Caudatella heterocaudata Caudatella heterocaudata Ephemeroptera, found on snowpack - Caudatella Ephemeroptera found on snowpack - Caudatella Ephemeroptera from along fast-flowing stream, near a large waterfall - Caudatella Ephemeroptera from along fast-flowing stream, near a large waterfall - Caudatella

Ephemerellidae, genus Drunella - Drunella Ephemerellidae, genus Drunella - Drunella Unidentified mayfly nymph - Drunella Drunella walkeri Drunella tuberculata Drunella cornutella Drunella coloradensis Mayfly - Drunella

Mayfly - Ephemerella subvaria Mayfly - Ephemerella subvaria - female teneral mayfly - Ephemerella dorothea - male Ephemerella dorothea Ephemerella dorothea Ephemerella invaria  - Ephemerella invaria - female mayfly with bright red eyes and smoky forewings - Ephemerella Mayfly - Ephemerella dorothea - female

Mayfly Larva - Eurylophella prudentalis mayfly - Eurylophella Mayfly - Eurylophella aestiva May Fly - Eurylophella Spiny Crawler Mayfly - Eurylophella prudentalis Eurylophella verisimilis  Eurylophella funeralis - Eurylophella funeralis - female mayfly - Eurylophella

Matriella teresa Matriella teresa Matriella teresa Matriella teresa Matriella teresa

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