Levizonus laqueatus Mikhaljova, 1981

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 : 169

Levizonus laqueatus Mikhaljova, 1981

Figs 5 , 13

Levizonus laqueatus Mikhaljova, 1981a: 62 , fig. 1, map (fig. 5) (holotype ♂, from Sokolovka Cordon, Lazovskiy Nature Reserve, Primorskiy krai, Russia, in ZMUM).

Levizonus laqueatus – Mikhaljova 1981b: 87; 1983: 81; 1990: 136; 1993: 33; 1998: 54, figs 205–209, map 12; 2004: 247, figs 617–622, map 32; 2009a: 5; 2009b: 394; 2017: 297, figs 664–669, map 43. — Mikhaljova & Petukhova 1983: 53. — Tanabe 1994: 108. — Ganin 1997: 22; 2011: 77. — Marek et al. 2014: 72.

Diagnosis

The species differs from its congeners mainly by the always smooth central edge of the gonopod telopodite apex (vs with one to numerous outgrowths and spinules in L. distinctus , L. thaumasius , L. circularis , L. nakhodka sp. nov., L. malewitschi ) and the strong dentiform SL ( Fig. 5A–E ).

Material examined

RUSSIA • 1 ♂; Primorskiy krai, Lazovskiy State Nature Reserve, Sokolovka Cordon ; 11 Jun. 1979; E.V. Mikhaljova leg.; about 2,5 km below the pass; FSCB 101979 .

Distribution

Russia: Far East, Primorskiy krai (Lazovskiy State Nature Reserve).

Remarks

The species has hitherto been reported only from Lazovskiy State Nature Reserve, Primorskiy krai, Russia, its terra typica. Levizonus laqueatus is a dominant species; its abundance is 166 ind./m 2 ( Mikhaljova 1981b). Vulva as in Fig. 5F .

Figures

Fig. 5. Levizonus laqueatus Mikhaljova, 1981, ♂, ♀ (FSCB 101979). A. Gonopod, mesal view. B. Gonopod apex, mesal view. C. Gonopod, lateral view. D. Gonopod apex, lateral view. E. Gonopod apex, ventral view, slightly turned mesally. F. Vulva, ventromesal view. Scale bars: A = 200 μm; C, F = 100 μm; B, E = 20 μm; D = 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).