Janus Pannonius Múzeum Évkönyve 30-31 (1985-1986) (Pécs, 1987)

Természettudományok - Nógrádi, U. Sára: Caddisflies of the Eastern Mecsek Mountains, Hungary (Trichoptera), I.

CADDISFLIES OF THE EASTERN MECSEK MOUNTAINS, HUNGARY (TRICHOPTERA), I. SÁRA U. NÓGRÁDI Nógrádi, U. Sára: Caddisflies of the Eastern Mecsek Mountains, Hungary (Trichoptera), I. Abstract. Caddisflies of the landscape protection are have been examined since 1983. The first results of 64 species are given in this paper. Two species: Synagapetus krawanyi Ulm., Potamophylax luctuosus Pill, et Mitt, proved to be new for the Hungarian fauna and a new endemic taxon: Chaetopteryx schmidi mecse kensis Nógrádi was described from this area. Introduction The Eastern Mecsek Mountains are the largest mountains in the mass on the South Transdanubia. The surface coverage is more than 150 sq. kms and the highest point is 682 m (Zengő Hill). Their length is about 20 kms lying in a southwest-northeast direction. On the area of Eastern Mecsek Mountains the „Eastern Mecsek Mountains landscape protection area" was demarked in 1976 covering about 90 sq. kms. The geological structure is very variable. The bulk of the surface rocks developed in the Mesozoic comprising diverse shales, lime- and volcanic stones (Lovász— Wein 1974). This area is covered by large forests: mostly beech, hornneam-oak and in the valleys ravine forests. There is a well-developed network of streams. A part of streams runs to the south, these are the smaller ones. The streams more abounding in water belong to the network of Streams „Völgységi-patak" and „Öreg-patak", both run to the northeast reaching the Sió Channel. Larger streams can be found in the valleys „Várvölgy", „Hidasi-völgy", „Egregyi-völgy", „Réka-völgy" and in the Valley of Óbánya. Numerous smaller brooks indicated on tourists' map are dry in the best part of the year. The examination of the insect fauna of the Eastern Mecsek Mountains began several years ago. A single caddisfly datum was published from here by Újhelyi (1971), followed by Nógrádi et al. (1985), who gave several new data. Method and material The regular examination of the Trichoptera fauna began in 1983. In this year we collected several times near the Spring „Iharos-forrás" and at Pásztor Spring (both are in the Valley „Vár-völgy"). These collections were carried out by 250 (or sometimes 125) Watt mercury vapour lamp. The night collecting yielded 2751 specimens on these localities (see Tables 2 and 3). In 1984 the Valley of Óbánya was examined, resulting only 288 caddisflies (Table 4). A light trap was operated at the village Kárász in 1984, its caddisfly material consisting of 1381 specimens was wholly elaborated (Table 5). Other localities were examined occasionally (Fig.l). At most of the localities we also used the sweeping net at daytime. The result of this methods was very moderate, but some species were collected only by this way (Chaetopteryx schmidi mecsekensis, Rhyacophila hirticornis) or the highest number of specimens were found this time (Rhyacophila tristis, Lithax obscurus). Some species: Rhyacophila fasciata, Wormaldia occipitalis, Chaetopteryx major were collected in both ways. All collected species and localities can be studied in Table 1. The number of species was the highest at Kisújbánya, Pásztor Spring (42 species). 36 species were captured both by the light trap at Kárász and at Óbánya. At the Spring „Iharos-kut", near Vékény, 29 species were taken. At the other localities — where we collected by sweeping only — 1—7 species were found. The total number of the species thus is 64. It may be remarked that at another point of the Mecsek Mountains, in the Valley „Nagy-mély-völgy", 34 species were ascertained as a result of two-years of collections (Nógrádi 1984a). On the basis of 5,000 specimens collected over several years in the Bares Juniper Woodland (South Hungary) the occurrence of 65 caddisfly species were proved (Nógrádi 1985a). The number of species can be much higher in some West Hungarian localities, e. g. it has reached 70—80 species at Szőce, Magyarszombatfa (authoress' and Á. Uherkovich's collections). List of material All species are listed with their data (locality, date, number of males and females) in this section. The material of the Kárász light trap is summarized by indicating the months and total number of specimens. The adopted system and nomenclature are those of Botosäneanu and Malicky (1978). As the bulk of material is collected by authoress and Á. Uherkovich, the name of the collectors is not given. A Janus Pannonius Múzeum Évkönyve 30-31 (1985—86): 11—22. Pécs, Hungária, 1987,