The systematics of the genus Dermacentor Koch (lxodoidea, lxodidae). Communication l. A new species, D. montanus, sp. n., from the Peter the First Ridge and description of a new subgenus, Asiacentor, subgen. n. Entomologicheskoe Obozrenie, 53(2) 1974: 470-476. 470 [Zoological Record Volume 111]