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Genus Raptoheptagenia

Raptoheptagenia cruentata Raptoheptagenia cruentata
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Superfamily Heptagenioidea
Family Heptageniidae (Flatheaded Mayflies)
Genus Raptoheptagenia
Explanation of Names
Raptoheptagenia Whiting & Lehmkuhl 1987
Numbers
monotypic genus(1)
Identification
Nymphs resemble those of a typical heptageniid, but with ventral gills; gill lamellae slender, with several filaments radiating from a central plate
Range
NA(2); widespread in western to central North America, but rarely collected
Habitat
Mid-sized to large rivers; in gravel- or cobble-bottomed riffles
Season
Mature nymphs present during mid-summer in upper Midwest
Food
Nymphs predaceous
Print References
Waltz R.D, Edmunds G.F., Jr., Lester G. (1998) New distributions for Raptoheptagenia cruentata and Ametropus neavei (Ephemeroptera: Heptageniidae, Ametropodidae). Entomological News 109: 213-214.
Internet References
Mayfly Central: https://www.entm.purdue.edu/mayfly/na-species-list.php