Graduate Thesis Or Dissertation
 

The leafhopper genus Giprus (Homoptera:Cicadellidae)

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  • Members of the deltocephaline leafhopper genus Giprus Oman live on grasses, primarily in the desert-scrub, chaparral, and marine sand dune communities of western North America. Of 16 known species, 10 are undescribed. Recharacterization of the genus results in exclusion of Laevicephalus incongruus Oman. Differentiation of species is primarily dependent on male genital structures; characterization of species is through illustration, verbal description, and a diagnostic key. Infraspecific variation noted is primarily of two types: size and color variation in two dune-inhabiting species, and variation in shape and size of accessory aedeagal processes of G. siskiyou (Oman). The fifth instar nymph of Giprus is characterized. It is concluded that the distributional patterns of the Oregon Species of Giprus are not determined by host associations.
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