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62 spiny crawler mayflies species
Ephemerella invaria
Ephemerella subvaria
Ephemerella dorothea
Timpanoga hecuba
Drunella grandis
Drunella flavilinea
Ephemerella needhami
Ephemerella excrucians
Drunella coloradensis
Eurylophella funeralis
Eurylophella enoensis
Drunella cornutella
Serratella serratoides
Drunella cornuta
Caudatella hystrix
Drunella lata
Caudatella heterocaudata
Drunella pelosa
Drunella spinifera
Drunella tuberculata
Attenella margarita
Dentatella coxalis
Ephemerella apopsis
Dannella simplex
Attenella attenuata
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