S. Mahunka szerk.: Folia Entomologica Hungarica 57. (Budapest, 1996)
Notogaster: Humeral part strongly protruding anteriorly, a well separated larger tubercle on lateral margin also observable. Median part convex, framed laterally and posteriorly, the whole surface covered by pustules of similar size. Ten pairs of notogastral setae present, mostly straight, sligthly lanceolate and spiculate. Lateral part of prodorsum: A pair of rounded crests and a pair of large tubercles with two acute tips are seen in dorsal aspect. Ventral regions: All part of this region well sclerotised, apodemes thick. A pairs of framed hollows present behind the acetabula 4. Mentum and coxisternal region foveolate. Ventral plate pustulate, as is notogastral surface. Genital and anal plates also foveolate. Epimeral setae minute, three pairs of them visible on epimere 1. Anogenital setal formula: 4-1-2-3. Adanal setae resembling notogastral ones, slightly dilated distally. Legs: Surface of femora foveolate, genu, tibia and tarsus without any sculpture. Material examined: Holotype: Switzerland, "Feldvaderli". 14. IV. 1949. Leg. E. Wettstein. 5 paratypes from the same sample. The holotype and paratypes embedded in the same slide. The holotype is marked by a black circle round and located the nearest to the left label with the name written by me, and with the letter and number W(ettstein) 20 in red ink. Types deposited in the NHMB. Remarks: The description is based on the embedded specimens, some parts of the specimens were not observable. The new species belongs to the "marginalus" speciesgroup, it is distinguished from the related species by the bacilliform interlamellar setae, by the form of the sensillus and the ratio of the notogastral setae. Etymology: I dedicate the new species to the memory of the late Dr. E. Wettstein. REFERENCES Grandjean, F. (1936): Les Oribates de Jean Frédéric Hermann et de son père (Arachn. Acar.). — Ann. Soc. ent. France 105: 27-110. Mahunka, S. (1993): Oribatids from Switzerland I. (Acari: Oribatida) (Acarologica Genavensia LXXXI). — Archs Sei. Genève 46: 51-56. Mahunka, S. (1994): Oribatids from Madagascar II. (Acari: Oribatida) (New and interesting mites from the Geneva Museum LXXIX.). — Revue suisse Zool. 101: 47-88. Moraza, M. L., Herrera, L. y Pérez-Inigo, C. (1980): Estudio faunistico del macizo de Quinto Real. I: Acaros Oribatidos (Acari, oribatei). — Publ. Biol. Univ. Navarra 1: 24. Pérez-Ifügo, C. (1976): Ácaros oribatidos del la isle de Tenerife (Acxari Oribatei) — EOS 51: 85141. Pérez-Inigo, C. (1987): Oribatidos de las islas Azores (I) (Acari, Oribatei). —EOS 63: 197-228. Pestalozzi, G. (1962): Prof. Dr. Ernst Wettstein 1878-1962. — In: Kantonale Oberrealschule Zürich. Jahresbericht 1961/62., pp. 50-51. Woolley, T. A. and Higgins, H. G. (1966): Xenillidae, a new family of oribatid mites (Acari: Cryptostigmata). —J. New York ent. Soc. 74: 201-221. {Received: May 15, 1996) Author's address: S. MAHUNKA Zoological Department Hungarian Natural History Museum Baross u. 13 H-1088 Budapest HUNGARY
