Isotomidae of Japan and Asiatic part of Russia. II. The genus Tetracanthella of the Far East Author Potapov, Mikhail Author Brinev, Alexey Author Sun, Xin text ZooKeys 2019 855 31 54 http://dx.doi.org/10.3897/zookeys.855.33000 journal article http://dx.doi.org/10.3897/zookeys.855.33000 1313-2970-855-31 97EBB900648B4094A139A3098C2571DA Tetracanthella martynovae Potapov, 1997 Distribution. The species is distributed in central part of Russian sector of Arctic. From the Far East it is known only in Chaunski district (Chaun Bay) of Chukotka, as "cf. britannica" by MacLean et al. (1978) , which is the most eastern record of the species so far.