Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 70. (Budapest 1978)

Papp, L.: Contribution to the revision of the Palaearctic Lauxaniidae (Diptera)

collection of the HNHM. A species very close to H. christophi BECK, (first I thought it synonymous with it) but its çf genitalia are different (Fig. 7 and 16, cf. Fig. 9. and 14). No other différencies were found between the two species. Homoneura remmi sp. n. (Figs. 3, 10, 13) A completely yellow species belong in the minor species-group. Frons dull yellow, ocellar triangle and orbitalia subshining. Longest hairs on arista 0.06 mm. Mesonotum anteriorly with 6 rows of badly arranged acmi, 4 well-arranged rows between dc bristles. 0 + 3 dc pairs. Median acmi much longer than lateral acmi, longest bristles about 0.28 mm. Mid tibia ventroapically with 1 shorter and 1 strong bristle. Crossveins in diffuse brown areas. m

x of holotype cf '• 2.22. Wing length: holotype cf '• 3.18 mm, paratypes: 2.94-3.50 mm, width :holotype cf'- 1-36 mm, paratypes: 1.09-1.40 mm. cf 5th sternite (Fig. 13) with some thick, blunt black thorns laterally, anterior part of 6th sternite with many long, comparatively thick bristles medially and several blunt black thorns laterally (these latter directed ventrally); posterior part of 6th sternite with a pair of small, bulb-like processes. Phallus (Fig. 3) very complex, surstylus (Fig. 10) with a long, ventrocaudally directed process (beset with small, thick, erect hairs). — Body length: holotype f : 3.00 mm, paratypes: 2.823.45 mm. Holotype çf : "Hungary, Csévharaszt, nyíres, 1968, VI. 6. leg. Soós Á." — Paratypes: 1 çf : data same as for holotype; 1 cf '• "Oszlár, Holt Tisza, 8. 5. 1964., leg. TÓTH S."; 1 çf: "Vaskút, coll. THALHAMMER"; 1 çf : "Velencei-tó, Velence, 30. 5. 1951.", leg. HALÁSZFY"; 2 çf: "Őr Szfent]Miklós, IV., VI., SAJÓ". — Esthonia: 1 çf: "Làti, Koiva j., org. Eèsis, pajud, lepad, 3. 7. 1969., J. VILBASTE", "Homoneura ? minor BECK." E. REMM, 1970. 1 çf : "Kihnu, Rootsikula, niiski puishiit, 11.06. 1973, J. VILBASTE", "Homoneura ? minor BECK." E. REMM, 1973. — Romania: 1 çf: "Temesvár, Hungária, THALHAMMER"; 2 çf : "Csorba, Hungária, THALHAMMER"; — Jugoslavia: 1 çf: "Velebit, 5. 7." ; 1 çf : Vlasïc, THALHAMMER". H, remmi sp. n. is very near to H. minor (BECKER, 1895) and to other species of this species-group, nevertheless it differs from them by the characteristics of the çf pregenital sternites and of Xh&çf genitalia (Fig. 10, 13, cf. Fig. 7, 9, 12,14, 15,16 and Fig. 13 of SHEWELL, 1971). I dedicate the new species to Mrs. Evi REMM (Tartu), who has obtained remarkable results in the study of Lauxaniidae of the Baltic republics of the USSR. Homoneura shewelliana sp. n. (Figs. 12, 15) (= H. ? minor [BECK.] of SHEWELL, 1971, designed with Fig. 12) A yellow species with clear wings. Fronts mat yellow. Arista with short pubescence (longest hairlets 0.030-0.035 mm long), 0 + 3 dc pairs, anterior pair situated well beyond suture. Acrosticals in 4 rows, bristles in median rows longer (longest acrosticals on holotype 0.15 mm long). 1 mp, 2 st. Mid tibia with one strong and one smaller (slightly more than half as long) ventroapical bristles. Wings unspotted, veins yellow. c

x = 3.45,

/;;

x of holotype: 1.89. f 6th sternite (Fig. 15; Fig. 12 of SHEWELL, 1971) very complicated with a pair of long, wide, caudal processes; medially directed processes with many long bristles. Surstylus (Fig. 12) partly fused with hypopygium, with blunt end and with minute hairs and teeth. — 9 8th sternite short and simple, cerci short, with numerous thin, sinuate hairs. Wing length: holotype çf: 2.76 mm, paratypes: 2.753.09 mm, width: holotype cf: 1.06 mm, paratypes: 1.03-1.14 mm.— Body length: holotype çf : 2.76 mm, paratypes: 2.59-3.09 mm. Holotype çf : "Mongolia, Central aimak, Kerulen, 45 km O v. Somon Bajandelger, 1400 m, Exp. DR. Z. KASZAB, 26. VII. 1965 (Nr. 304)", "Homoneura sp. ? n. minor (BECK.) Det. SHEWELL, 1966". — Paratypes: 4 9

: data same as for holotype: 1 rf

, 5 9 : "Bulgan aimak, cca 20 km W von Somon Bajannuur, 1100 m, 18. 6. 1966, DR. Z. KASZAB (Nr. 531)", 1 f: "Bugan aimak, 4 km S von Somon Daschincilen, 1200 m, 23. 7. 1966, DR. Z. KASZAB (Nr. 735)". H. shewelliana sp. n. is near to minor (BECKER, 1895) but a little smaller. It distinctly differs from minor by the much longer processes of the 6th sternite of çf, by the different shape and armature of the rf 6th sternite and of surstylus. The çf 5th sternite of the new species is almost without bristles, contrarily to minor, as males of minor have strong, short blunt black thorns on the margin of the 5th sternite. SHEWELL (1971) did not decide whether the