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.)

Risa longirostris BECKER, 1907 (Figs. 2—3) Lectotype male. The head drawing made from the original specimen by HENNIG (1937) is very precise, only labella longer. Antenna extremely long, 2nd joint pubescent bearing only 1 small dorsomedial bristle, arista short, bent and bare. Third antenna! joint only microscopically pubescent. Frons longer than its width, frontal triangle at apex reaching lunula, entire frons shining black. Vibrissae short and thin, peristomals below eyes shorter than width of 3rd antennái joint. Two inward bending lower (?) orbitals, 1 small anterior and 1 stronger posterior upper orbital bristles present, former bending forward, latter backward and outward, 1 pair each of ocellar, outer and inner vertical bristles (mostly broken off on specimens). Mouth opening very large. Praelabrum thin, long hairpin-like. Thorax and abdomen black, with greenish sheen. Thoracic chaetotaxy (Fig. 2) : 1 humeral, 2 notopleural, 1 posthumeral, 1 supraalar, 0 postalar, 0 dorsocentral, 1 intraalar (!) bristle and 1 pair of bristle, regarded to be characteristic by HENNIG. This is defintely not a dorsocentral, since situated within the dc lines, nor does it stand in prescutellar position but in front of scutellum at a distance of its length, accordingly, it can only be an acrostichal macrochaeta. The acrostichal microchaetae are sporadic and no bristle is present behind the acrostichal macrochaeta. (Lectotype with broken off acma). The short apical scutellar bristles cross one another (partly broken off

, cf. HENNIG I.e.), while lateral scutellar bristles weakly curving inwards. Mesopleura setulose: near caudal margin 2 stronger and 1 weaker bristle present. It has 1 strong sternopleural bristle and several sternopleural hairs. Legs carrying no characteristic bristles, except middle tibia with its ventral spur. Wing readily corresponding with drawing of HENNIG, except the anal vein present as an atrophied vein along a 2/3 portion from origin to margin of wing. c

x in lectotype: 1.25. Length of wing in lectotype 1.54 mm, width 0.62 mm. Haltère whitish yellow, stalk of a somewhat darker hue. Length of body: lectotype male: 1.60 mm, paralectotype female: 1.71 mm. Lectotype male: "Biskra, IV. 52554" (in Becker's hand-writing), red "Typus" label, "Eis longirostris B." (in Becker's hand-writing); paralectotype female: upper hand-written label (in Becker's hand-writing) : "Biskra, IV. 52554", below it an inverted label with "Eisa BEKKER", red "Typus" label, below it again in "Becker's hand-writing : "longirostris BECK.". Of the two type-specimens I designated the male to be the lectotype since it may better represent the species, though several of its bristles are broken off. Another point of view, HENNIG'S drawing was made from this specimen. I have cut off the abdomen of the paralectotype female in order to make a preparation of it (unfortunately, the preparation did not come up to expectation;. Fig. 1. Meoneura glaberrima BECKER: genitalia of male lectotype. — Figs. 2-3. Eisa longirostris BECKER, paralectotype female: 2 = mesonoturn in dorsal view, 3 — sternite8 (?8 + 9).