Alaskaperla, a new stonefly genus (Plecoptera: Chloroperlidae), and further descriptions of related Chloroperlidae

Chloroperla ovibovis Ricker is removed from Chloroperla and placed in a new monotypic genus Alaskaperla , and first descriptions of its eggs and nymphs are provided. Vein A sub(2) of the forewing is unbranched, unlike all other North American Chloroperlinae genera except Haploperla), and the delicate, paired aedeagal rods separate A. ovibovis from European Chloroperla sensu Zwick (1967), which have complex, blade-like rods, and from Triznaka , which have no rods. The elongate, tongue-like epiproct and aedeagus are distinctive among Chloroperlinae. First SEMs of adult characters are presented for the type species of Chloroperla , selected Haploperla, Rasvena, Triznaka, Siphonoperla , and Suwallia species, and the eggs of Triznaka signata .