Janus Pannonius Múzeum Évkönyve 27 (1982) (Pécs, 1983)

Természettudományok - Uherkovich Ákos: A Zselic nagylepkefaunája IV. Kelet-Zselic: Palé környéke (lepidoptera)

50 UHERKOVICH ÁKOS The Macrolepidoptera of Zselic Hill IV. / Eastern-Zselic: Palé-region (Lepidoptera) ÁKOS UHERKOVICH Two papers have been published on the macrolepidoptera fauna of Zselic: one of them introduced to numerous data of SW-Zselic (Vásárosbéc-region), the other one did it of SE-Zselic (Uherkovich 1981a, 1982a). The third part, in press, is about the butterfly and moth fauna of „Zselic land protection area". The present contribution aimed at introducing the macrolepidoptera fauna of Eastern Zselic (Pale region). This area borders on the Völgység Downs, the fauna of which has been known (Uherkovich 1977). Most forest of the examined area was cleared a very long time ago. The rest parts of these old forests have their original composition. These are mixed forests, the dominant trees are beech, oaktree and hornbeam, the other species (Scotch fir, birch, mapple, lime, etc.) occur by singles. North of the forest, closed to village Pale, a lighttrap functioned for three years, 1979-1981 (1-4. Figs.). The trap captured 19047 specimens of 477 species during this perios (Table 1). The daytimecollections (since 1967) gave further 43 species, too. The complete list of collected species is given with the quantitative data (all specimens per species in 3 years). 23 rare or characteristic species are introduced, distribution of б species (Cyclophora orbicularia Hbn., Nyssia zonaria D. et Schiff., Perconia atrigillaria Hbn., Plusia chryson Esp., Mormo maura L., Dasychira iascelina L.) in South- and West-Transdanubia is given by maps, too (Fig. 5.). The following conclusions can be drawn on the macrolepidoptera fauna of this region: 1. The ecological spectrum of the macrolepidoptera is comparatively wide, though the extreme xerophilous and extreme hygrophilous species are not present. 2. Few species occur here which live on birch, alder and altoherbosa-plants, because of the drier climate. 3. The atlanto-mediterranean Perconia strigillaria Hbn. also occurs here, as it does in several other points of Zselic Hill or Mecsek Mountains. 4. Several such species live here which earlier had been considered to be montane element, but proved only to be favouring humid conditions (Siberian nemoral and altoherbosa species), most of these are today in recent expansion, e. g. Diarsia brunnea D. et Schiff., Hydriomena íurcata Thnbg., Autographa v-aureum Hbn. 5. The percentual value of species living on lichens is not high. The ration of leave-eating species of some collecting sites is compared with another (Fig. 8). As the light trap was set up not too close to the forest, the ratio of leave-eating species was smaller than at traps functioning in the depth of the forests. The dominant species and the most frequently leave-eating species are given in table 2-3.