Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 69. (Budapest 1977)

Papp, L.: Notes on some Becker's types (Diptera, Carnidae and Risidae fam. n.)

Notes on Some Becker's Types (Diptera, Carnidae and Risidae fam. n.) by L. PAPP, Budapest Abstract — Lectotype designations and descriptions of Meoneura glaberrima BECKER, 1910, Meoneura prima (Becker, 1903) sp. val. and Risa longirostris BECKER, 1907 are given. Meoneura seducta COLLIN, 1937 is a new junior synonym of Meoneura prima (BEKKER, 1903). Morphological characteristics of the new family Risidae fam. n. are discussed. With 3 figures. Recently I spent a 12-day study tour in the Zoological Museum of Berlin (Museum für Naturkunde der Humboldt Universität). While there I had good opportunity to study the rich material of Milichiidae and Carnidae. The present paper yields information regarding a part of my research results concerning three species described by BECKER whose types I studied in detail. Herewith I would especially like to thank the extensive help of Dr. HUBERT SCHUMANN, his valuable information and his cooperation in making it possible for me to have some type-specimens on loan. Meoneura glaberrima BECKER, 1910 (Fig. 1) BECKER, Deutsche Ent. Ztschr., 1910: 664. HENNIG, Flieg, pal. Reg., 6/1 : 64, Textfig. 59 (other references see there). Lectotype male. Body and legs shining black, only scutellum pruinose. Shining frontal triangle (contrary to other authors, and description!) reaching fore 3/4 of frons. Fore 1 /3 of frons dark reddish brown in strong light. Acrostichal microchaetae scattered, 3 pairs of dorsocentral bristles present, front 2 pairs 2/3 length of posterior pair. Legs bearing no appreciable characteristic, middle metatarsi long and thin. Wings in transmitted light somewhat milky white with light green and sky-blue irridescence. Knob of haltère large and yellowish white, stalk dark. Postabdomen of male syntype was used for preparation by HENNIG. This excellent preparation is in a cardboard capsule bearing HENNIG'S inscription: "Meoneura glaberrima BECK, rf, Korsika, Vizz,avona, 1100 m hoch, 7-23.6.1907, gesammelt von TH. BECKER. Type. DR. W. HENNIG praep." I examined and made a drawing of this genitalia preparation under a microscope with high magnification (Fig. 1). On the basis of the genitalia we must reject HENNIG'S supposition that glaberrima BECK, is perhaps the Corsican subspecies of lacteipennis FALL. ; in fact, it is only a distant relative of the latter. Lower part of hypopygium bearing not such a large bristle as in lacteipennis, its lamella appearing independent bearing 2 strong, and several short, thin bristles, contrary to lacteipennis in which lamella fused with base of surstylus and beset only with short brisÜ33 (Fig. 1, cf. PAPP, 1976: Fig. 12). Surstylus both in shape and in its bristles widely differ from that of lacteipennis, and neglecta COLLIN, 1930 seems to come closest to it (last establishment is based on the genitalia examination of a male type-specimen of M. neglecta Coll.). Bat while the surstylus of neglecta strongly widening in the middle and bearing fewer bristles, furthermore, the medially bending bristle near apex is thicker