S. Mahunka szerk.: Folia Entomologica Hungarica 57. (Budapest, 1996)

ROVARTANI KÖZLEMÉNYEK LVII 1996 pp. 105-108 Data to the Cheyletidae (Acari: Prostigmata) fauna of Hungary Z. Lucza. G. Ripka and K. R.-Saly Data to the Cheyletidae (Acari: Prostigmata) fauna of Hungary — The authors had collected 9 species belonging to 6 genera of the family Cheyletidae from ornamental trees and shrubs of Budapest between 1989-1995 and from stored cereals and fodder between 1994-1995. The following species are new for the Hungarian fauna: Cheyletus aversor Rohdendorf, 1940, Ch. trouessartiOudemans, 1902, Cheletomorpha lepidopterorum (Shaw, 1794), Acaropsis docta (Berlese, 1886), Cheletacarus raptor Volgin, 1961, Prosocheyla oaklandi (Baker, 1949) and P. traubi (Baker, 1949). Key to the collected species is given. INTRODUCTION In recent years, predacious mites received increasing attention owing to their importance in biological control from both entomologists and acarologists. Species of the family Phytoseiidae and Stigmaeidae occur on sprout system of the plants most frequently, but species of the family Cheyletidae are present besides on the leaves of plants also in stored products. These mite species decrease the density of phytophagous mites at an important degree, but soil the stored products with their excrement and moulted cuticles. Several publications deal with the predacious mites fauna of our country, but only Jávor (1969), Erdős (1982) and Sz.-Komlóvszky (1979, 1980, 1984) mention two species of the family Cheyletidae, Cheyletus eruditus (Schrank, 1781) and Cheletogenes ornatus (Canestrini et Fanzago, 1876). The aim of our study is to give data on the cheyletid mites occurring on ornamental trees, shrubs and in stored cereals, fodder. MATERIALS AND METHODS One part of the surveys carried out on the whole region of the capital from roadside, squares, suburbs, protected rows of trees, in smaller part from parks, arboretums and house-gardens between 1989-1995. The plant samples (minimum 5 pieces of sprouts, branches, twigs or barks/plant or 25 leaves/plant) had been collected into Nylon-bags from 269 tree and shrub species between January and the end of November. Mites were removed from the plant samples with a mounted-needle under a stereo-microscope and were put into lactic acid. Another part of the surveys had been carried out in the region of Keszthely between May, 1994 and July, 1995. Samples had occasionally been collected from stored cereals (wheat, barley, oat, maize) and animal fodder (piglet-feed, porker-feed, rabbit-feed, HV feed mixture, maize silage, granulated soy, hay) in different granaries and fodder storage