subspecies

Sphingonotus (Sphingonotus) eurasius kazakus Uvarov, 1954

Sphingonotus eurasius orientalis Bey-Bienko, 1948: 191. (homonym in Uvarov, 1954: 147)
Sphingonotus eurasius orientalis Bey-Bienko, 1948 in Bey-Bienko & Mistshenko, 1951: 626 [277].
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Sphingonotus eurasius orientalis Bey-Bienko, 1948 (subjective synonym of Sphingonotus eurasius kazakus Uvarov, 1954) in Uvarov, 1954: 147.
Stenobothrus eurasius kazakus (Uvarov, 1954) in Otte, 1995: 231.

Bey-Bienko, G.Y. & Mistshenko, L. (1951) Keys to the Fauna of the U.S.S.R. [1964 English translation no. 40]. In Locusts and Grasshoppers of the U.S.S.R. and Adjacent Countries. Zoological Inst. of the U.S.S.R. Academy of Sciences, Moscow/Leningrad. Vol. 2, 385–667 [1–291]. Available at http://www.biodiversitylibrary.org/item/224097#page/7/mode/1up
Bey-Bienko, G.Y. (1948) New and characteristic grasshoppers (Acrididae, Orthoptera) of desert landscapes of southeastern Kazakhstan. Izvestiia Akademii Nauk Kazakhskoi SSR, 8, 186–195.

Otte, D. (1995) Orthoptera Species File 5, Grasshoppers [Acridomorpha] D. The Orthopterists' Society and The Academy of Natural Sciences of Philadelphia, Philadelphia, 630 pp.
Uvarov, B.P. (1954) Synonymic and nomenclatorial notes on Acrididae (Orthoptera). Entomologische Berichten, 15, 146–147. Available at http://natuurtijdschriften.nl/pub/1015174