Levizonus distinctus Mikhaljova, 1990

Mikhaljova, Elena V., 2021, Review of the millipede genus Levizonus Attems, 1898, with description of a new species from the Far East of Russia (Diplopoda, Polydesmida, Xystodesmidae), European Journal of Taxonomy 751, pp. 159-184 : 167-168

Levizonus distinctus Mikhaljova, 1990

Figs 4 , 13

Levizonus distinctus Mikhaljova, 1990: 134 , fig. 1 (holotype ♂, from Zimoveyniy Cordon, Sikhote-Alin State Nature Biosphere Reserve, Primorskiy krai, Russia, in ZMUM).

Levizonus distinctus – Mikhaljova 1993: 33; 1998: 53, figs 200–204, map 12; 2004: 245, figs 612–616, map 32; 2009a: 5; 2017: 295, figs 660–663, map 43. — Ganin 2011: 341. — Marek et al. 2014: 72. Levizonus distinatus (sic!) – Ganin 1997: 124.

Diagnosis

This species differs from congeners mainly by the presence of a H (conical process) ( Fig. 4B–C ) at the base of the gonopod SL (vs absence of a H at the base of the gonopod SL in all other congeners) and the smaller body (vs larger in all other congeners).

Material examined

RUSSIA • 1 ♂; Primorskiy krai, Sikhote-Alin State Nature Biosphere Reserve, Nechet Cordon ; 23 Jul. 1979; M.N. Gromyko leg.; Pinus koraiensis Siebold & Zucc. with Larix forest; FSCB 91979 • 1 ♂; same locality as for preceding but Zimoveiniy Cordon; 8 Aug. 1983; M.N. Gromyko leg.; Betula valley forest, third floodplain river terrace of Serebryanka River; FSCB 11983 • 1 ♂, 1 ♀; same locality as for preceding but Yasnaya Cordon; 24 Jun. 1984; M.N. Gromyko leg.; Betula valley forest; FSCB 11984 .

Distribution

Russia: Far East, Primorskiy krai (Sikhote-Alin State Nature Biosphere Reserve).

Remarks

The species is known only from the original description from the Sikhote-Alin State Nature Biosphere Reserve, Primorskiy krai, Russia ( Mikhaljova 1990). Gonopods and vulvae as in Fig. 4 .

Figures

Fig. 4. Levizonus distinctus Mikhaljova, 1990, ♂♂, ♀ (FSCB 11983, 11984). A. Gonopod, mesal view, unnaturally curved. B. Gonopod apex, mesal view, slightly rotated around its axis. C–D. Gonopod apex, ventral view, in somewhat different angles. E. Vulva, mesal view. Scale bars: A, D–E = 100 μm; B = 20 μm; C = 10 μm.

Fig. 13. Distribution of species of the genus Levizonus Attems, 1898. Filled square: L. circularis Takakuwa, 1942. Filled circle: L. distinctus Mikhaljova, 1990. Open square: L. laqueatus Mikhaljova, 1981. Open triangle: L. nakhodka Mikhaljova sp. nov. Filled triangle: L. malewitschi Lokschina & Golovatch, 1977. Filled diamond: L. thaumasius Attems, 1898. Heart: L. takakuwai (Verhoeff, 1941). Oval: L. montanus (Takakuwa, 1941).