Lithobius (Ezembius) ostiacorum Stuxberg, 1876

Lithobius (Ezembius) ostiacorum - Nefediev et al. 2017c: 13; 2017d: 218: map.

Material examined

(all from Russia, southwestern Siberia, Altai Province, Charysh District, ca. 4.5 km SE of Charyshskoye Village). 1 ♀ (ZMUM), foot of S slope of mountain, Padus avium and Populus tremula stand near brook, hand sampling, 31.05.2016; 1 ♀ (ASU), site 1 on N slope, soil sample 1 (0-10 cm deep), 2.06.2016; 1 juv. (ASU), site 1 on N slope, soil sample 2 (0-10 cm deep), 2.06.2016; 1 ♂ (ASU), site 1 on N slope, soil sample 3 (litter), 2.06.2016; 1 ♀, 1 juv. (ASU), site 1 on N slope, soil sample 5 (0-10 cm deep), 2.06.2016, all leg. P.N., Kh.N., S.N., V.S.; 1 ♀ (ASU), site 1 on S slope, soil sample 3 (0-10 cm deep), 12.07.2016; 2 ♀♀, 1 juv. (ASU), site 1 on N slope, soil sample 2 (0-10 cm deep), 12.07.2016; 1 ♂, 1 juv. (ASU), site 1 on N slope, soil sample 5 (0-10 cm deep), 12.07.2016; 1 juv. (ASU), site 2 on N slope, soil sample 2 (0-10 cm deep), 13.07.2016; 1 ♀ (ASU), site 2 on N slope, soil sample 4 (10-20 cm deep), 13.07.2016, all leg. Kh.N., S.N., V.S.; 2 juv. (ASU), site 1 on S slope, soil sample 5 (0-10 cm deep), 22.08.2016; 1 juv. (ASU), site 2 on N slope, soil sample 2 (0-10 cm deep), 23.08.2016; 2 juv. (ASU), site 2 on N slope, soil sample 3 (0-10 cm deep), 23.08.2016, all leg. P.N., Kh.N., S.N., V.S.; 1 ♂ (PSU), Betula pendula and Populus tremula stand on N slope, 51°21'33.8"N, 83°37'23.2"E, 518 m a.s.l., hand sampling, 20.06.2017, leg. P.N.

Distribution.

Southern Siberian boreal range with isolated Yenisei population: this species has previously been recorded in the Yenisei River area, Krasnoyarsk Province and Irkutsk Area (central and eastern Siberia, respectively) (Zalesskaja 1978), also recently found in northern Mongolia (Poloczek et al. 2016), Altai Province (Nefediev et al. 2017c) and Republic of Altai (Nefediev et al. 2017d).

Remarks.

The above record of L. ostiacorum, recently announced at the 17th International Congress of Myriapodology (Nefediev et al. 2017c), can be considered as the first formal find of the species in SW Siberia. In the study localities, the species was found more frequently on N facing habitats.