Aconurella diplachnis Emelyanov, 1964

Figs 8–12, 28–32, 47–49, 61–64, 86–95.

DIAGNOSTIC TRAITS. Macropterous, subbrachypterous, or brachypterous. In coloration, differs from A. quadrum and A. prolixa by strongly developed black pattern on crown in males, but similar in this trait to A. sibirica (Figs 8–12).

Pygofer lobe with dorsoapical part strongly sclerotized and densely covered with spines increasing in size towards its distal end, with triangular or stripe-like semitransparent area in middle of distal half, and with 3–4 very large denticles on posteroventral margin (Figs 61–64).

Differs from almost all members of the genus by large denticles on posteroventral margin of pygofer. Similar in this trait only to A. paradiplachnis Duan et Zhang, 2012 recently described from southern China (Guangxi Autonomous Region, Sichuan, and Yunnan Provinces).

DISTRIBUTION. Northern Caucasus (new record), steppes in the plains and low mountains of Kazakhstan, Central Asia, Southern Siberia, Mongolia, and China.

REMARKS. In North Ossetia, this species was collected in a mountain steppe with a predominance of xerophytic plant communities including Astragalus (Astracantha) denudata (Steven) Podlech ( Fabaceae). Since such biotopes have a local distribution in the Northern Caucasus, apparently, this locality is separated from the main part of the range of A. diplachnis .