Esyunin S.L., Efimik V.E. 2021. On the gratum species group of the genus Cheiracanthium C.L. Koch, 1839 (Aranei: Cheiracanthidae), with a description of a new species // Arthropoda Selecta. Vol.30. No.2: 239–244 [in English].
Perm State University, Bukireva Street 15, Perm 614600, Russia. E-mail: Sergei.Esyunin@psu.ru
ABSTRACT. A new gratum species group of the genus Cheiracanthium consisting of 10 species is proposed and diagnosed. Cheiracanthium gratum Kulczyński, 1897 is redescribed and illustrated based on newly collected materials. A new species — C. buri sp.n. — from Buryatia (Russia) is described from a single male.
KEY WORDS: Araneae, diagnosis, redescription, Transbaikalia, yellow sac spiders.