22. Lithobius (Ezembius) princeps Stuxberg, 1876

Terra typica: [Russia, Siberia, Yenisey River, between 61° and 62°] circa flumen Jenissej inter 61 et 62 gradus lat. bor. (Stuxberg 1876b).

Lithobius princeps Stuxberg, 1876a: 17; 1876b: 309 (♂ ♀).

Ezembius scrobiculatus Stuxberg, 1876a: 19; 1876b: 310.

Ezembius scrobiculatus — Chamberlin, 1919: 19; 1923: 241; Eason, 1976: 100 (1 ♀).

Monotarsobius princeps — Attems, 1909: 18.

Lithobius princeps — Eason, 1976: 97 (♂ ♀); Zalesskaja, 1978: 121; Tuf, 2007: 64; Tuf et al., 2010: 11; Sergeeva, 2013: 530.

Lithobius (Ezembius) princeps — Eason, 1976: 97; 1986b: 58; Bukhkalo et al., 2014: 71 (1 specimen); Nefediev et al., 2017a: 116 (1 subad. ♂); 2021: 39–40 (1 ♂); Nefediev & Farzalieva, 2020: 188 (9 ♂♂, 1 ♀).

? Lithobius czekanowskii Sseliwanoff, 1881a: 15 (12 specimens); 1881b: 7 (1 ♂, 1 ♀).

Previous records. Kazakhstan: East Kazakhstan Region —SW Altai Mts, Bukhtarma River Valley [Kz32, Kz33, Kz34] (Tuf 2007; Tuf et al. 2010).

Habitat records. “Pastures, woods” on 1100 m; “banks of river (woods)” on 1200 m; meadow on 1300 m (Tuf 2007).

Remarks. According to Eason (1976: 97), L. czekanowskii is putative junior synonym of L. princeps (listed above with a question mark); probable but uncertain synonymy (Bonato et al. 2016).

L. princeps is known from Siberia (Russia: Krasnoyarsk Province (Eason 1976), Tyumen (Sergeeva 2013) and Omsk Regions (Nefediev et al. 2017a), and Khakassia (Nefediev & Farzalieva 2020; Nefediev et al. 2021)).