Figure 2.Alterosa castroalvesi, new species, male genitalia. A left lateral view B dorsal view C left inferior appendage, dorsal view D phallic apparatus, left lateral view.
Figures 11–14.Variation in Minnesota specimens of Oecetis houghtoni sp. n., and Oecetis avara (Banks). 11–12 Oecetis houghtoni 13–14 Oecetis avara: a inferior appendage, lateral b phallobase, lateral c preanal appendage, dorsal d phallobase, caudal e phallobase, ventral f mesal process of tergum X, lateral.