Distribution and Ecology of Taeniopterygidae (Insecta: Plecoptera) in Bulgaria

摘要

Data about the distribution and ecology of 17 Taeniopterygidae species in Bulgaria are given in this study. The geographical distribution, based on a literature survey and available collection is presented with UTM codes and maps. Various hydro- ecological characteristics for every particular species are summarized and commented. Among the 17 species that have been recorded, one is regionally extinct (RE) from the country, 9 - critically endangered (CR), 3 - endangered (EN) and one is vulnerable (VU). From a zoogeographical point of view, 4 species from the Taeniopterygidae, recorded in Bulgaria, are endemics: Brachyptera thracica is a Bulgarian endemic (only in the Rhodopes Mts.) and B. bulgarica, B. helenica and Rhabdiopteryx triangulari are Balkan endemics. The correlations of seven Taeniopterygidae species with corresponding environmental data were analyzed using direct multivariate technique (CCA). A large majority of environmental factors showed significant correlations, but the strongest were those with the altitude, substrate types and oxygen content, tested additionally by a nonparametric Spearman rank order correlation.