Dorcadion optatum, an endemic species to Kyrgyzstan, has been described from Tokmok environs (Kyrgyzstan) as Dorcadion (Compsodorcadion) optatum by Vasily Evgrafovich Jakovlev in 1906 [❖]. Its subspecies, D. optatum matthieseni, has been described from Bishkek environs (Kyrgyzstan) as Compsodorcadion matthieseni by Georgyi Leonidovitsch Suvorov in 1910 [✧][▽].

Body length:	♂♂ 13 - 21.5 mm / ♀♀ 14.5 - 23.1 mm
Life cycle:	1 year
Adults in:	April - May
Host plant:	roots of grasses
Distribution:	an endemic species to Kyrgyzstan

The depicted beetle was collected in Chon Aryk village environs (900 m, Kirgizskiy Ridge, Kyrgyzstan) on April 20, 2001.

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[❖]
Jakovlev V.E.:
Species review of the subgenus Compsodorcadion Ganglb. (Coleoptera, Cerambycidae).
Revue Russe d'Entomologie, Saint-Petersbourg 6 (1-2): 32-48, 1906. [download ]

[✧]
Suvorov G.L.:
Neue Arten und Varietäten der Untergattung Compsodorcadion Ganglb. (Coleoptera, Cerambycidae).
Revue Russe d'Entomologie, Saint-Petersbourg 10 (1-2): 61-71, 1910. [download ]

[▽]
Danilevsky M.L.:
Review of Dorcadion (s. str.) species from the upper Chu-Valley and allied territories (Coleoptera, Cerambycidae).
Coléoptères, Paris 5 (3): 15-41, 1999. [download ]

Danilevsky M.L.:
New data on Dorcadion Dalman, 1817 (Coleoptera, Cerambycidae) of middle Chu-river basin in Kazakhstan and Kirgizia.
Humanity Space - International Almanac 1 Suppl. (11): 4-46, 2012. [download ]