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

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

when we consider the identified but unlabelled specimens. In several cases he even misidentified the genus; and I established that about a dozen of the species was identified well, i.e. all the specimens belonged to the one and the same species. On the other hand, the work of COLLIN (1948), a brief monograph on the Lauxaniidae of the British Isles is a very reliable contribution to the knowledge of this group. COLLIN elucidated several taxonomically dubious points. Unfortunately, the Lauxaniide fauna of the British Isles is comparatively poor especially when we consider the southern territories of the Palaearctic region. HENNIG (1948, 1951) described a number of species and revised some from the Old World on the basis of the male genitalia. Recently, MARTINÉK (1974, etc.) published several papers on the Lauxaniidae of Czechoslovakia. Remm (1972, 1974) published a number of faunistic papers on the Lauxaniidae of the Baltic Soviet Republics, while recently (1978) she described several new species on the basis of male and female genital organs, synonymizing at the same time some of the species of CZERNY on the basis of the same. Thus, it seems high time to make a comprehensive revision of the Palaearctic Lauxaniidae. The present author started to study this group of flies over 18 months ago by examining the type-material of the following museums : Museum für Naturkunde, Zoologisches Museum the type-material of the following museums: Museum für Naturkunde, Zoologisches Museum, Berlin; Naturhistorisches Museum, Vienna; Zoological Institute of the Academy of Sciences of the USSR, Leningrad; Hungarian Natural History Museum, Budapest. The general governing principle was to examine the genital apparatus of the types but other morphological features were also freely used. The new species described in the following and the already known ones will yield about 150-160 species in the Palaearctic region. Of this number only about 45-50 are easily recognizable, and previous authors applied the names consequently. This work subscribes to the validity of 45 species, 10 are synonymized with certainty, a further number becomes ambiguous, while the names of a few species should be discarded since they are unrecognizable. A further 38 species await revision, thus, this work is far from being complete. The more important results of the work obtained so far are discussed in rather an arbitrary order, since we must remember that relationships among the known genera, let alone phylogenetical trends are very inadequately known. Here I should like to thank the following persons who were kind enough to lend me type-specimens indispensable for any kind of revisionary work: DR. HUBERT SCHUMANN (Beriln), DR. RUTH LICHTENBERG (Vienna) and DR. EMILIA P. NARTSHUK (Leningrad). I would especially like to thank Mrs. Evi REMM. (Eesti NSV Teaduste Akadeemia, Zoológia ja Botanika Instituut, Tartu) for her invaluable help. Homoneura v. D. WULP, 1891 MINOR species-group (christophi BECK., dentiventris CZERNY, lasdini CZERNY, minor BECK., rectangulata CZERNY, remmi sp. n. shewelliana sp. n., tesquae BECK.) H. christophi (BECKER, 1895): 197, 182 (Sapromyza). — Lectotype çf: "Sarepta 30274" (on light reddish label) "Typus" "Sapromyza christophi Type BECK, çf" (BECKER'S handwriting) (a well-preserved specimen, only anterior pair of dc bristles missing). — Paralectotypes: 1 çf : "Sarepta 30274", "christophi". 1 9 : Sarepta Christoph, 11574, Coll. H. LOEW, "christophori BECKER" (BECKER'S handwriting). Types in the Zoologisches Museum, Berlin. Longest hairs on arista only 0.06 mm long. Crossveins with brown surrounding area, acmi in 6 badly arranged rows on anterior part of mesonotum but 4 arranged rows between dc bristles. Median ac bristles longer than laterals. 0^3 dc. Mid tibia with 2 strong ventroapical bristle. M

x of lectotype çf : 1.86, wing length of lectotype çf : 3.14mm, width: 1.29 mm. The abdomen and genitalia of the lectotype çf are prepared on a slide, f genitalia (Fig. 9), pregenital sternites (Fig. 14). — Body 1 enth of lectotype çf : 3.27 mm.