The well-known rapid northward range expansion of this species in the last decades was attributed by the authors to genetic admixture of cold-adaptation alleles from East Asian populations.
Ponomarev & Dvadnenko (2013) described Haplodrassus caucasius and sketch its distribution from Krasnodar Region eastwards to Dagestan.
Kovblyuk et al. (2013) described Pireneitega ovtchinnikovi and the male of P. spasskyi (Charitonov, 1946). Both species are vicarious species: P. ovtchinnikovi in the Western Caucasus Major and P. spasskyi in the Eastern Caucasus Major. The authors also identified all specimens of P. segestriformis (Dufour, 1820) from the Caucasus to be misidentified specimens of P. ovtchinnikovi.
With these updates, the database now runs as Version 1.4.1 (see details).