Species Composition, Vertical Distribution and Areographical Structure of the Family Tachinidae (Diptera) in Bulgaria

A total of 432 species of the family Tachinidae has been established in Bulgaria so far. The most species-rich are the zones between 200 and 800 m a.s.l. [291–298 species (67.5–69.1%)]. The greatest number of species has been found in the zone of the xerothermic oak forests (333 species or 77.3%). The tachinid fauna can be divided into two main groups: 1) species with Mediterranean type of distribution (63 species – 14.6%), more thermophilic and distributed mainly in the southern parts of the Palaearctic and the lower parts of the mountains; 2) species with Palaearctic and Eurosiberian type of distribution (369 species – 85.4%), more eurybiontic and widely distributed. The distribution of the zoogeographical categories in the different vegetation belts of Bulgaria is scrutinised. The tachinid fauna is compared with the neighbouring countries and Mediterranean Africa.