Fauna motýlů (Lepidoptera) dářských rašelinišť ve Žďárských vrších

Abstract: Available faunistic data of the Lepidoptera from the peat bogs in the surroundings of the Malé and Velké Dářko ponds (Radostínské rašeliniště National Nature Reserve and Dářko National Nature Reserve) are summarized in this paper. Most data were obtained through author's own research, chiefly by a light trap installed in the central part of the Radostínské rašeliniště peat bog during 1995–1997. In total, 716 species of Lepidoptera were collected. Selected families obtained by the trap are quantitatively evaluated (a total of 20,500 specimens and 339 species) and Shannon index of species diversity, Simpson index of dominance, and Shannon index of equitability are calculated. The results from the Dářko peat bogs are compared with results from other thirteen, predominantly wetland sites in the Českomoravská vrchovina highlands. The comparison focuses on species that demonstrate a higher affinity to wetland and peat-bog type biotopes in the Czech Republic and species which occurred at more than 1% frequencies in the quantitatively-assessed sample (eudominant, dominant, and subdominant species). The area of the Dářko peat bogs is currently the only refuge for typical peat-bog Lepidoptera in the Českomoravská vrchovina highlands. The following tyrphobiont species were identified: Glyphipterix haworthana (Stephens, 1834), Athrips pruinosellus (Lienig et Zeller, 1846), Acronicta menyanthidis (Esper, 1789), and Amphipoea lucens (Freyer, 1845). Among them, A. menyanthidis was most frequently trapped; the ability to reach high values of dominance was confirmed for other tyrphophilous species. Frequency of some bioindicator species, primarily Coenonympha tullia (Müller, 1764), dropped in the course of several past decades. Incidence of several characteristic species, including Colias palaeno (Linnaeus, 1761), was not recently confirmed in the area in spite of focused monitoring.

Key words: Lepidoptera, ecofaunistics, peat bogs, nature reserve, Central Europe, Czech Republic, Českomoravská vrchovina highlands