S. Mahunka szerk.: Folia Entomologica Hungarica 32/2. (Budapest, 1979)
FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK (SERIES NOVA) XXXII. 2. 1979 p. 139-152 Complementary data to the knowledge of some Oribatid species (Acari) By S. MAHUNKA (Received December 10, 1978) Abstract: Complementary data are given to 20 Oribatid species belonging in the families Brachychthoniidae, Eremaeidae, Liacaridae, Suctobelbidae and Oppiidae, based on the material preserved in the Zoological Institute of the Academy of Sciences, Leningrad. In preparing a series of books (BALOGH, J. and S. MAHUNKA: The Oribatids of the World) on the higher Oribatid taxa of the Palaearctic Region to be comprised in volumes 2 and 3 it has been found that the available descriptions of many a species are inadequate even with their respective figures for including them in identification keys. In other cases the original diagnoses do not contain certain features used in our work. Since we wished to include all the "good" species in our books and wanted to diminish the number of "species inquirendae" it was decided to visit as many collections, and to have on loan as many types as possible. With this in mind had I the opportunity with a support from the Hungarian Academy of Sciences to visit the Zoological Institute of the Academy of Sciences at Leningrad and the Istituto Sperimentale per la Zoológia Agraria (Coll. BERLESE) at Florence. Owing to the fact that our books will appear in two or three years time, and furhter because all the details cannot be published in them important they may be, I decided to publish these details in this separate article for I hope that these notes wiH help specialists in •understanding better the species in question. The present article proposes to treat the material preserved at Leningrad. Here many holotypes are kept especially from the families Oppiidae and Suctobelbidae, but other species belonging in different families (Eremaeidae, Liacaridae, etc.) were also available for study. I must stress that all the preparations-are preserved thus that I had not been able to open any of them. Consequently, the herewith published figures should be evaluated with this in mind. For his friendly help'I am most indebted to Prof. Dr. V.l. VOLGIN, head of the mite collection (since deceased) and his collaborator Dr. M. SITNIKOVA. Species examined Brachychthonius obscurus D. Krivolutsky, 1966 Bjull. Mosk. , Obs. Isp. Pri. Otd. Biol., 71: 126- 127, Fig. 1. Opr. Obit. Po. Kles. (Sarcopt. ): 60 (syn. B. immaculatus Forss. , 1942)
