Vol. 77 (1) 2025

ARTICLES

The Dipterans (Insecta: Diptera) of the Stara Planina Mountains, Bulgaria


Zdravko Hubenov

Abstract
A total of 1723 species of 70 families have been established in the Stara Planina Mts. so far. The family Mycetophilidae is the most numerous (219 species or 12.7%), followed by Tachinidae (161 species or 9.3%), Muscidae (157 species or 9.1%) and Agromyzidae (101 species or 5.9%). The greatest number of species have been found in the Western Stara Planina Mts. (1087 species or 63.1%), in the belt of the mesophilic and xeromesophilic mixed forests (1432 species or 83.1%) and north of the central ridge (1289 species or 74.8%). The faunistic similarity between the separate parts of the mountain is scrutinised. The dipterans belong to 121 areographical categories, divided into two main groups: 1) species with Mediterranean distribution (103 species – 6.0%): 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 distribution (1620 species – 94.0%): more eurybiontic and widely distributed in the Palaearctic and in the mountains. The Holomediterranean and South-eastern European forms (from 0.5% to 0.7%) are the best represented in the first group. The European, Holarctic and Transpalaearctic taxa (from 6.4% to 18.1%) prevail in the second group. The endemic species are 24 (1.4%). The distribution of the areographical categories in the separate parts of the mountain and the vegetation belts is also scrutinised.

Key words
Diptera, Bulgaria, Stara Planina Mts., faunistic composition, areographical characteristic

How to Cite
Hubenov Z. 2025. The Dipterans (Insecta: Diptera) of the Stara Planina Mountains, Bulgaria. Acta zoologica bulgarica 77 (1) 23-39.