25. Escaryus chadaevae Titova, 1973

Escaryus chadaevae Titova 1973: 105.

Escaryus chadaevae - Rybalov 2002: 83; Vorobiova et al. 2002: 62; Poloczek et al. 2016: 117; Volkova 2016: 675; Nefediev et al. 2017c: 221; Dyachkov and Farzalieva 2023: 229.

Type localities.

Russia: Kemerovo oblast: "Prokopyevsky i Novokuznetsky r-ny" (Titova 1973) = Prokopyevsky, ca 53°53'N, 86°43'E, and Novokuznetsky, ca 53°45'N, 87°07'E, districts.

Type series.

Holotype: female. Paratypes: 10 specimens, including 5 males and 5 females. Deposited in ZMMU (S. Golovatch and A. Schileyko, pers. comm., 13.II.2023 and XII.2023).

Diagnosis.

An Escaryus species with body length reaching ≥ 1.5 cm; clypeus without plagulae; labral arc relatively shallow, with denticles short and obtuse; first maxillae with one pair of lappets; forcipular trochanteroprefemur and femur with small bulges, tibia with a large bulge, tarsungulum with a large basal denticle; 33-35 leg-bearing segments; metasternite of the ultimate leg-bearing segment trapezoid, distinctly wider than long; coxal pores only on the ventral side of coxopleura; anal pores absent.

Distribution.

Western Siberia: Kemerovo oblast, Republic of Altai (Titova 1973; Nefediev et al. 2017c). Eastern Siberia: Krasnoyarsk krai (Rybalov 2002; Vorobiova et al. 2002). Outside Asian Russia: European Russia (Republic of Bashkortostan) (Titova 1973; Volkova 2016), and Northern Mongolia (Poloczek et al. 2016; Dyachkov and Farzalieva 2023).