Composition and Zoogeographic Features of the Stonefly Fauna (Insecta: Plecoptera) of Mountainous and semi-mountainous streams in Aegean watershed (7th Ecoregion, Eastern Balkans)
Violeta G. Tyufekchieva*, Biljana J. Rimcheska
Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 1 "Tsar Osvoboditel" Blvd., Sofia - 1000, BULGARIA
*Corresponding author: firstname.lastname@example.org
Abstract. This work summarise 23 species and 4 subspecies stoneflies established during sample periods, Autumn 2017 and Spring 2018 at 38 mountainous and semi-mountainous streams from Bulgaria and North Macedonia. The species are relatively estimated by the dominant analysis. The Plecoptera fauna belongs to 7 zoogeographical categories, grouped into 5 complexes. Moreover, eighteen taxa are European species and three (Brachyptera beali beali (Navás, 1923), Leuctra hirsuta Bogoescu & Tabacaru, 1960, Isoperla pesici Murányi, 2011) are Balkan endemic species. Furthermore, Amphinemura sulcicolis (Stephens, 1836) and Isoperla pesici Murányi, 2011 were recorded at North Macedonian fauna only. Among the total of 20 stoneflies species that have been recorded in Bulgaria, 6 taxa are classified as Vulnerable (VU) according to the Red Data Lists of Threatened species.
Key words: stoneflies, distribution, dominant analysis, Bulgaria, North Macedonia.