PARTHENOGENESIS IN THE BURROWING MAYFLY HEXAGENIA RIGIDA (EPHEMEROPTERA)

Abstract
Parthenogenesis in North American mayflies occurs in Ameletus ludens Needham (Clemens 1922), Ephoron album (Say) (Britt 1962), Stenonema fermoratum (Say) (McCafferty and Huff 1974), S. interpunctatum (Say), S. pulchellum (Walsh), and S. vicarium (Walker) (Huff and McCafferty 1974). Attempts to determine its occurrence in the genus Hexagenia are reported for H. limbata occulta Walker (Neave 1932), H. limbata (Serville) (Hunt 1953), and H. bilineata (Say) (Thomforde and Fremling 1968). The purpose of this note is to report hatching in unfertilized eggs of H. rigida McDunnough.

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