Homoptera (Insecta) in Pacific Northwest grasslands. Part 1 - New and revised taxa of leafhoppers and planthoppers (Cicadellidae and Delphacidae)

摘要

Nine new combinations are created when Acanthodelphax LeQuesne (Delphacidae) is synonymized with Kosswigianella Wagner and the genus Aschedelphax Wilson is reduced to subgenus in Elachodelphax Vilbaste: Delphacodes analis Crawford and three Palaearctic species in Acanthodelphax are transferred to Kosswigianella; Aschedelphax hochae Wilson, Delphacodes coloradensis Beamer, D. indistinctus Crawford, D. bifidus Beamer, and D. pedaforma Beamer are transferred to Elachodelphax. Seven other new combinations include Delphacodes atridorsum Beamer, transferred to Caenodelphax Fennah; Delphacodes kilmani (Van Duzee), transferred to Paraliburnia Jensen-Haarup; Delphacodes venusta Beamer, transferred to Nothodelphax Fennah; Eurysa magnifrons (Crawford), E. montana Beamer and E. obesa Beamer, transferred to Eurybregma Scott; plus the leafhopper Sorhoanus helvinus (Van Duzee) transferred to Lebradea Remane. Twenty new species and 3 new subspecies are described from the Pacifie Northwest, including the leafhoppers Athysanella castor, A. hyperoche, A. lemhi, A. occidentalis megacauda, A. repulsa, Diplocolenus configuratus bicolor, Mocuellus caprillus anfractus, M. quinquespinus, Psammotettix diademata, P. nesiotus, Sorhoanus involutus, S. virilis, S. xiphosura,Stenometopiellus vader and Unoka dramatica, plus the planthoppers Achorotile apicata, Elachodelphax unita and E. mazama (both compared to E. borealis sp. nov. from east of the Rocky Mountains), Eurybregma eurytion, Kosswigianella irrutilo, K. wasatchi,Paraliburnia furcata and P. lecartus. Two new names are created: Athysanella (Gladionura) hicksi for A. expulsa Blocker and Hicks (preoccupied), and Psammotettix greenei for P. emarginata Greene (preoccupied). The presence of intermediate morphs suggestive of hybrids reduce Athysanella ladella Johnson and A. wilburi Ball & Bcamer to sub specific status in A. occidentalis Baker, Diplocolenus nigrior Ross & Hamilton to subspecies status in D. configuratus (Uhler) and Mocuellus strictus Ross &. Hamilton tosubspecies status in M. caprillus Ross & Hamilton. Variation within series over a wide area reduces Athysanella vativala Blocker to synonymy with A. terebrans Gillette & Baker, and A. mansa is synonymized with A. occidentalis wilburi as a hybrid morph.