S. Mahunka szerk.: Folia Entomologica Hungarica 44/1. (Budapest, 1983)

Chorizococcus viktorina sp. n. and Ferreroaspis gen. n. in the Hungarian fauna (Homoptera: Coccoidea, Pseudococcidae and Diaspididae) By F. KOZÁR (Received October 20, 1982) Abstract: Description of Chorizococcus viktorina sp.n, and that of the Ferreroaspis gen.n.for the species Acanthomytilus hungaricus Vinis, 1981 are given. Last year, three scale-insect species, new to science, were found on Chrysopogon gryllus (Gramineae) (Szársomlyó Mts., Hungary). One of them is described here, while the description of the other two will be given elsewhere. The faunal list-and-key to the Hungarian scale-insect species was already published by KOSZTARAB and KOZÀR (1978). The first supplement (in Hungarian) will soon be published (KOZÁR, 1983, in print). In connection with the addition, here I describe a new species: C. viktorina, and a new genus: Ferreroaspis for the species Acanthomytilus hungaricus Vinis, 1981. It is thought that the establishement of the new genus is justified by the substantial differences existing between Acanthomytilus hungaricus and other Acan thomytilus species. Family: PSEUDOCOCCIDAE Genus: Chorizococcus McKenzie, 1960 The first data about this North American genus in Europe were presented in the work of DE LOTTO (1973). One of the species, C. rostrellum (Lobdell, 1930) had already been collected by me in Hungary, in 1971. Recently, another species new to science has been found here. There are no good morphological characters for the distinction of the American genus Chorizococcus from the European Atrococcus Goux, 1941. The European species of Chorizococcus are.pinkish in coloration, while the Atrococcus species are black, they especially turn to a distinct black or bluish-black colour in potassium hydroxyde. Our Chorizococcus species have only 1 pair of cerarii and a circulus, but the Atrococcus species have more than 1 pair of cerarii, and have no circulus {except A. bejbienkoi

). Chorizococcus species feed only on grasses in Hungary, while the Atrococcus species live on various herbaceous plants. Owing to the above-mentioned differences, it is high time to revise the genus together with the related Spilococcus Ferris, 1950 genus. On the bases of our data I think that the Chorizococcus species are native in Europe and, therefore, they had not been introduced.