Review of the millipede genus Levizonus Attems, 1898, with description of a new species from the Far East of Russia (Diplopoda, Polydesmida, Xystodesmidae) Author Mikhaljova, Elena V. text European Journal of Taxonomy 2021 2021-06-10 751 159 184 http://dx.doi.org/10.5852/ejt.2021.751.1387 journal article 6178 10.5852/ejt.2021.751.1387 90b859b1-1ce1-43b2-995b-646ea1bc6513 2118-9773 4923494 4766E736-A4DC-4A4B-AF99-3CCDACE094AB Key to the species of Levizonus 1. Metatergal surface with low bosses either everywhere ( Fig. 1A–B ) or only laterally. Gonopods as in Fig. 2A–D …………………………………………………………… L. circularis Takakuwa, 1942 – Metatergal surface smooth, without any bosses.Gonopods different…………………………………2 2. Apex of gonopod telopodite like two plates placed perpendicular to each other ( Fig. 6A–B ) ……………………………………………………… L. malewitschi Lokschina & Golovatch, 1977 – Apex of gonopod telopodite not like two plates placed perpendicular to each other ………3 3. SL with a large long H basally ( Fig. 4B–D )…………………… L. distinctus Mikhaljova, 1990 – SL without a large long H basally ………………………………………………………………4 4. Telopodite apex trifurcate ………………………………………… L. takakuwai ( Verhoeff, 1941 ) – Telopodite apex not trifurcate ……………………………………………………………………5 5. SL massive, dentiform. ( Fig. 5B–D ) …………………………… L. laqueatus Mikhaljova, 1981 – SL not massive, not dentiform ……………………………………………………………………6 6. Apical edge of telopodite without numerous small outgrowths …… L. montanus ( Takakuwa, 1941 ) – Apical edge of telopodite with one to numerous small outgrowths, seldom smooth ………………7 7. Telopodite subapically with lateral large knee-shaped protrusion (K) ( Fig. 8C ). Telopodite apex narrower ( Fig. 8D ) …………………………………………… L. nakhodka Mikhaljova sp. nov. – Telopodite subapically with lateral small rounded protrusion (K1) ( Fig. 10A–D ). Telopodite apex broader ( Fig. 11A ) …………………………………………………… L. thaumasius Attems, 1898