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Our studies of the Ephemeroptera family Ephemerellidae have revealed new synonyms and a new combination for species that have been placed in the genus Crinitella Allen and Edmunds. The type species, Crinitella coheri (Allen and Edmunds), is variable in color, and the shape of the left mandible is the same as that of C. permkami Wang and Sites, indicating that C. coheri (Allen and Edmunds) 1963 = C. permkami Wang and Sites, 1999, new synonymy. Drunella nasiri (Ali), new combination, was included in Crinitella previously. All other species previously included in Crinitella are synonyms of species in different genera, as follows: Cincticostella levanidovae (Tshernova) 1952 = Crinitella swatensis (Ali) 1971, new synonymy, and Torleya nepalica (Allen and Edmunds) 1963 = Crinitella wahensis (Ali) 1971, new synonymy.
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Jacobus et al. (2003) studied this question.
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