Levizonus Attems 1898

Genus Levizonus Attems, 1898 Levizonus Attems, 1931: 69. Ezaria Takakuwa, 1941a: 8 (with type species: Ezaria montana Takakuwa, 1941), synonymized by Hoffman (1980: 157). Profontaria Verhoeff, 1941: 411–412 (with type species: Profontaria takakuwai Verhoeff, 1941), synonymized by Tanabe (1994: 102). Hokkaidaria Verhoeff, 1941: 414–415 (invalidly proposed without type species), synonymized by Jeekel (1971: 266). Ezodesmus Takakuwa, 1942c: 42 (with type species: Ezodesmus lunatus Takakuwa, 1942), synonymized with Profontaria by Hoffman (1956: 99), synonymized with Levizonus by Tanabe (1994: 102). Levizonus – Tanabe 1994: 102–103. — Mikhaljova 2021: 160–162. Type species Sulciferus (Levizonus) thaumasius Attems, 1898: 352, fig. V.112; “Wladiwostok”, by original designation. Diagnosis Without the possibility to investigate any material, the diagnosis here is given based on earlier descriptions (Tanabe 1994: 102; Mikhaljova 2021: 162). Levizonus differs from all other Palaearctic xystodesmid genera mainly by the arcuate to coiled ring-like gonopod telopodite without prefemoral process, but with a modified apex. The loop makes at most one ring, whereas in Parafontaria Verhoeff, 1936 it forms 1.5 to 2 rings. Levizonus has a relatively long subcylindrical gonopod coxa (vs oval in Parafontaria), and a short solenomere (vs long in Riukiaria Attems, 1938). Species included At present, eight species are recognized in the genus Levizonus: L. circularis Takakuwa, 1942, L. distinctus Mikhaljova, 1990, L. laqueatus Mikhaljova, 1981, L. malewitschi Lokschina & Golovatch, 1977, L. montanus (Takakuwa, 1941), L. nakhodka Mikhaljova, 2021, L. takakuwai (Verhoeff, 1941), and L. thaumasius Attems, 1898 (Mikhaljova 2021). Distribution Members of the genus are only known from the northern part of the Far Eastern region: Russia (Primorskiy krai), North Korea, Japan (Hokkaido), and North-East China.