Ryndevich S.K.1, Prokin A.A.2 2024. Taxonomic status of Enochrus simulans and E. umbratus (Coleoptera: Hydrophilidae) // Russian Entomol. J. Vol.33. No.4: 430–444 [in English].
1 Baranavichy State University, 21 Voykova str., Baranavichy, Brest Region. 225404 Belarus.
2 Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Nekouzskiy Distr., Yaroslavl Oblast’, 152742 Russia.
Sergey Ryndevich: ryndevichsk@mail.ru https://orcid.org/0000-0001-6699-9062
Alexander Prokin: prokina@mail.ru https://orcid.org/0000-0002-9345-5607
doi: 10.15298/rusentj.33.4.04
ABSTRACT. Enochrus umbratus (Sharp, 1884) stat.rev. has been restored in the species status and the lectotype and paralectotypes of Philydrus umbratus Sharp, 1884 has been designated. Enochrus umbratus is still known only from type specimens, all other published records of this species belong to Enochrus simulans (Sharp, 1873). Due to the absence of new findings more than 140 years, it is proposed that Enochrus umbratus is very rare species or can be a migrant from other region, occasionally collected in Japan. Redescriptions of Enochrus simulans and E. umbratus with diagnostic features, illustrated by original photographs and line drawings, are provided.
KEY WORDS: water scavenger beetles, Coleoptera, Hydrophilidae, Enochrus, taxonomy, East Asia.