Historia naturalis bulgarica (May 2018)
The Dipterans (Insecta: Diptera) of the Vitosha Mountain
Abstract
A total of 1272 two-winged species that belong to 58 families has been reported from the Vitosha Mt. The Tachinidae (208 species or 16.3%) and Cecidomyiidae (138 species or 10.8%) are the most numerous. The greatest number of species has been found in the mesophylic and xeromesophylic mixed forests belt (707 species or 55.6%) and in the northern part of the mountain (645 species or 50.7%). The established species belong to 83 areographical categories. The dipterous fauna can be divided into two main groups: 1) species with Mediterranean type of distribution (53 species or 4.2%) — more thermophilic and distributed mainly in the southern parts of the Palaearctic; seven species of southern type, distributed in the Palaearctic and beyond it, can be formally related to this group as well; 2) species with Palaearctic and Eurosiberian type of distribution (1219 species or 95.8%) — more cold-resistant and widely distributed in the Palaearctic; 247 species of northern type, distributed in the Palaearctic and beyond it, can be formally related to this group as well. The endemic species are 15 (1.2%). The distribution of the species according to the zoogeographical categories in the vegetation belts and the distribution of the zoogeographical categories in each belt are considered. The dipteran fauna of the Vitosha Mt. is compared to this of the Rila and Pirin Mountains.
