| Description |
In the course of a faunistic survey in the Bílé Karpaty Protected Landscape Area and Biosphere Reserve (south-eastern Moravia, Czech Republic), altogether 36 species of Plecoptera from seven families were recorded. Seven of them are classified in the Red List of threatened invertebrates of the Czech Republic, in the categories “endangered” (Isoperla sudetica (Kolenati, 1859), I. tripartita Illies, 1954, Perlodes dispar (Rambur, 1842) and Perla marginata (Panzer, 1799)) and “vulnerable” (Perla abdominalis Burmeister, 1839, Amphinemura standfussi (Ris, 1902) and Nemoura sciurus Aubert, 1949). Among them, an East Mediterranean species Isoperla tripartita which reaches the north-western limit of its distribution in the Czech Republic and is widespread and frequent in the Bílé Karpaty PLA, and a central European species Nemoura sciurus, infrequent in the Czech Republic but common in the area investigated, are especially noteworthy. Other interesting records include four species with a Carpathian, Balkano-Carpathian or Carpathian-Anatolian distribution (Nemoura carpathica Illies, 1963, N. fusca Kis, 1963, Protonemura aestiva Kis, 1965, and Leuctra quadrimaculata Kis, 1963) which are rare in the Czech Republic. Three species (Perlodes dispar, Perla marginata and Leuctra major Brinck, 1949) found in the Bílé Karpaty PLA in 1958 have not been re-collected in recent years at the sites of their earlier occurrence. These species are sensitive to pollution and stream morphology degradation and these impacts may have caused their dissappearance in the area. The highest species richness of stoneflies was found in springs and brooks in the mountainous part of the PLA. The majority of species recorded occur in these biotopes.
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