Review of the Neoaliturus fenestratus (Herrich-Schäffer, 1834) species group (Homoptera: Auchenorrhyncha: Cicadellidae: Deltocephalinae: Opsiini) from Russia, Kazakhstan, and Central Asia

In Russia, Kazakhstan, and Central Asia the Neoaliturus fenestratus species group includes eight species. Illustrated descriptions, oscillograms of male calling signals, and data on host plants and distribution for all species are given. One new species from European Russia and two new species from Kazakhstan and Central Asia are described, and the synonymy N. fenestratus (Herrich-Schäffer, 1834) = N. lituratus Dubovskiy, 1966, syn. n. is established. Considerations concerning possible modes of diversification of species of this group are provided.

The effect of temperature and hosts on the population dynamics of Neoaliturus fenestratus (Herrich-Schäffer) (Hemiptera: Euscelidae)

The population dynamics of the leafhopper Neoaliturus fenestratus (H.-S.) was studied at two temperatures (20 and 25°C) and on a summer host-plant (safflower) and a winter host-plant (Chrysanthemum segetum).The life-span, reproduction and computed rates of increase were established, and it was found that the leafhopper performed best on safflower at 25°C. Delayed mating induced longer survival in both sexes. C. segetum, the winter host-plant, enabled long maintenance of the insect, although markedly reducing its rate of reproduction. The implication of these findings for the seasonal cycle of the leafhopper is discussed.