Omalium rivulare (Paykull, 1789)

Staphylinus rivularis Paykull, 1789: 65 .

For synonyms and other references see Schülke & Smetana (2015), Herman (2001) and Shavrin (2025b).

Material. TURKEY: BOLU: 3 ♂♂, 1 ♀: Mudurnu, Mangirlar, 1 km W, 40°33'56.0''N 31°20'09.0''E. 1085 m a.s.l. 18.05.2022. (cA) ; ORDU: 1 ♂, 1 ♀: Medudiya, Mahmudiye 1 km SE, 40°35'35.0''N 37°39'31.0''E. 1252 m a.s.l. 14.05.2022. (cA) ; YOZGAT: 1 ♀: AkDağmadeni, 39°34'28''N 35°40'02''E. 1874 m a.s.l., pitfall trap. 07.04.- 20.11.2018. E. Yağmur & S. Örgel leg. (cA) ; TOKAT: 1 ♀: Merkez, Şehitler, 1 km SW, 40°31'48.0''N 36°35'42.0''E. 1217 m a.s.l. 19.11.2011. (cA) ; VAN: 2 ♂♂, 2 ♀♀: Resadiye Van Lake, S bank, 38°41'N 42°50'E. 1800 m a.s.l. 21.04.- 20.05.2014. C. Reuter leg. (NME) .

Remarks. Omalium rivulare is one of the widespread species in the Holarctic Region (Schülke & Smetana 2015). It is here recorded from Ordu, Yozgat, Tokat and Van provinces of Turkey for the first time.