Riolus nitens (P.W.J. Müller, 1817)

Sazhnev, A. S., Prokin, A. A., Komarova, A. S. & Philippov, D. A., 2022, New records of aquatic and riparian beetles (Coleoptera) for the fauna of the Vologda Oblast (Russia), Russian Entomological Journal 31 (2), pp. 132-139 : 138

Riolus nitens (P.W.J. Müller, 1817)

Fig. 24 .

MATERIAL. Nyuksensky distr. : 4.7 km S of Bobrovskoe vill., Bol’shaya Bobrovka River , 60°26´21´´N 44°47´52´´E, ripal (depth 0.1–0.4 m, current velocity 0.01–0.1 m /s, pH=8.5, sandy-rocky bottom), 16.VII.2020, 1 ex., DP, AK. Tarnogsky distr.: 4 km SE of Krasnoe rural locality, near Aksenovskaya abandoned built-up area, Uftyuga River, 60°29´44´´N 43°17´28´´E, in the riverbed near the water´s edge (depth 0.1–0.5 m, current velocity 0.01–0.1 m /s, pH=7.7, clay bottom), 18.VII.2020, 1 ex., DP, AK .

NOTE. This rare species was recorded for the Vologda Oblast without locality information [ Dumnich et al., 2008]. Our record confirms the presence of the species in the Vologda Oblast. Riolus nitens included in Red Data Book of Republic of Karelia [ Kuznetsov, 2020] as Data Deficient (DD) taxon.

Figures

Fig. 24. Riolus nitens. Scale bar: 1.0 mm. Рис. 24. Riolus nitens. МасШтаб: 1.0 мм.