Omalium rivulare ( Paykull, 1789 )

Omalium rivulare ( Paykull, 1789) View in CoL

Staphylinus rivularis Paykull, 1789: 65 View in CoL .

Staphylinus cursor O. Müller, 1776: 97 View in CoL .

Omalium incisum Gravenhorst, 1806: 209 View in CoL .

Anthobium piceum Stephens, 1834: 341 .

Omalium foraminosum Scriba, 1867a: 378 View in CoL .

Omalium porosum Scriba, 1867b: 72 View in CoL .

Omalium nitidicolle Poppius, 1904: 108 View in CoL .

Omalium obscuricorne Poppius, 1904: 110 View in CoL .

Omalium kabakovi Kashsheev, 1999: 141 View in CoL syn. nov.

For other references see Herman (2001).

Material examined. KAZAKHSTAN: EAST KAZAKSTAN REGION: 1 ♂: Altai , Bukhtarma, Katon Karagay. 25.08.2010. V. Kashsheev leg. ( ZIN); 1 ♂: Glubokoye. Carrion, traps. 15– 29.05.2008. V.K. Zinchenko leg. (cSh) .

Remarks. Omalium rivulare is one of the widely distributed species of the genus in the Holarctic Region ( Herman 2001, Shavrin 2025b). It was recorded from Kazakhstan by Kashsheev (1984). Despite this, Kashsheev (1999) described O. kabakovi Kashcheev, 1999 from Dzhungar Alatau, Jetisu Region of Eastern Kazakhstan. The original description was based on seven specimens from the upper reaches of Tentek River. The author has not compared this species with other species of Omalium , but after the description he provided a key for “relative” species, including European O. laticolle Kraatz, 1857 , Palaearctic O. curtipenne Mäklin, 1878 and widespread O. allardi Fairmaire & Brisout de Barneville, 1859 . When I was last time in ZIN in 2016, I could not locate the types of O. kabakovi except for one male of O. rivulare from Altai Mts., East Kazakhstan (see above). Based on the morphological features provided in the original description and sketchy figure of the aedeagus ( Fig. 2 View FIGURES 1–3 in Kashsheev 1999), O. kabakovi is conspecific with the Holarctic O. rivulare . Thus, it was synonymized with the latter species.