Janus Pannonius Múzeum Évkönyve 29 (1984) (Pécs, 1985)

Természettudományok - Nógrádi, Sára U.–Újhelyi, Sándor–Uherkovich, Ákos: Fundamental faunistic data on Caddisflies (Trichoptera) of South Transdanubia, Hungary

FUNDAMENTAL FAUNISTIC DATA ON CADDISFLIES (TRICHOPTERA) OF SOUTH TRANDSDANUBIA, HUNGARY Sára U. NÓGRÁDI, Sándor ÚJHELYI and Ákos UHERKOVICH Nógrádi, S. U.-Üjhelyi, S.-Uherkovich, Á. : Fundamental faunistic data on caddisflies (Trichoptera) of South Transdanubia, Hungary. Abstract. This first summary lists 107 caddisfly species from 70 localities of South Transdanubia. Seven species proved to be new for the Hungarian fauna: Synagapetus krawanyi Ulmer, Orthotrichia tragetti Mosely, Oxyethira flavicornis Pictet, Hydroptila simulans Mosely, Micrasema setiferum Pictet, Potamophylax luctuosus Pill, et Mitt, and Chaetopteryx schmidi mecsekensis Nógrádi. The very first summarized faunistic list of the caddisflies was published in 1900 in the volume of Fauna Regni Hungáriáé (Mocsáry 1900). This paper enumerated 139 species from the area of „historical" Hungary, which was equal to the Carpathian Basin with Croatia. 18 species of those were referred to localities of South Transdanubia (from Pécs, Szekszárd, Mohács, Simontornya, Szántód, Lelle, Siófok). In 1914 two papers issued new data. Pongrácz (1914) resummarized the domestic species of Neuropteroidea. He mentioned 24 species from South Transdanubia repeating or widening Mocsáry'

s (1900) data. Pillich (1914) published 20 species from Simontornya, County Tolna. Almost all data of the three papers quoted are acceptable according to our recent knowledge, too. 25 years later a very short paper (Sátory 1939) listed 9 caddis species - on basis of larvae - from the Valley „Éger-völgy", Mecsek Mountains and its environs. One of these species is erroneous and further ones have not been proved till recent times. After another three decades further data were published by Újhelyi (1971, 1981a, 1982) from the family Leptoceridae and genera Hydropsyche and Rhyacophila. In another paper (Újhelyi 1981b) 28 species are published from Bares Juniper Woodland, South Transdanubia. From the seventies he worked up caddisfly materials of light traps and Uherkovich's collections. These material counted about 1500 specimens. As it can be concluded, the first 80 years of examination on Trichoptera has yielded very few species from the area of South Transdanubia. The distribution of these data is presented in Fig. 3. a. In the beginning of the eighties two of the coauthors (Nógrádi and Uherkovich) started a very intensive programme to investigate the caddisfly fauna of South Transdanubia. Within the framework of these investigations abundant material was collected and elaborated, and three papers have been compiled about the first results (Nógrádi 1984a, 1984b, 1985). It is these data that will be discussed below. Area examined, methods, material The area of South Transdanubia spreads over the counties Baranya, Somogy, the southeastern part of Zala and two-thirds of Tolna. The predominant part of surface is hilly, but two isolated low mountains (Mecsek and Villány Mts.) are there. Along the rivers there are small plains. The water-network of this area is varied. Quick running brooks can be found on mountainous parts, only. The brooks and rivers of hilly and flat regions are very slow and they have silty bed. A large, shallow lake (Balaton) and big streams (Danube, Drava) are along the margin of the area, only, and the caddisflies of these waters have not been examined yet. The most important collecting methods were as follows: 1. Sweeping and beating of day. These traditional methods yielded not too profuse material. Some species have been collected in this way only (Chaetopteryx schmidi Bots., Rhyacophila hirticornis McL.), some species could be caught by other ways, too, time by time (Wormaldia occipitalis Pict, Rhyacophila tristis Pict., Lithax obscurus Hagen, Beraea pullata Curt., Anabolia iurcata Brau., etc.). 2. Night capturing with mercury vapour bulbs. The method was introduced by lepidopterologists some decades ago. This is the most effective one, at advantageous night 200-500 specimens of 15-25 species can be collected in this way. Regular night collections were carried out on several points of Mecsek Mts. and nearby Bares. About 5000 caddisfly specimens were caught during these occasions. 3. Large material of several light traps was elaborated by the co-authors in the seventies and the eighties. In 1982 and '83 the complete material of two traps was evaluated, this one has mounted up to 6000 specimens Material of recent collections derived from 70 localities occupying 44 quadrates of the grid map (Fig. A Janus Pannonius Múzeum Évkönyve 29 (1984) : 37—48. Pécs, Hungária, 1985.