A new scorpion species, Euscorpius drenskii sp. nov., is described from the Western Rhodope Mts. in southern Bulgaria. It is characterized by an oligotrichous trichobothrial pattern, which shows a conspicuous loss of one trichobothrium in the external median patellar series (em = 3), also observed in E. carpathicus (Linnaeus, 1767) and the subgenus Alpiscorpius Gantenbein, Fet, Largiadèr & Scholl, 1999. Phylogenetic analysis of 16S rDNA marker sequences does not show any close relationship between these three groups, suggesting that the observed loss of a trichobothrium is an independent event.
Tropea, G., Fet, V., Parmakelis, A., Kotsakiozi, P. & I. Stathi. 2015. A new species of Euscorpius (Scorpiones: Euscorpiidae) from southern Bulgaria. Arachnologische Mitteilungen, 49: 10-20.