Abstract
Eleven species of the subgenus Lumetus Zaitzev, 1908 of the genus Enochrus Thomson, 1859 are recorded from Russia and adjacent countries. Enochrus ater (Kuwert, 1888) is recorded for the first time from Ukraine and Kyrgyzstan; E. bicolor (Fabricius, 1792), from Kyrgyzstan; E. fuscipennis (Thomson, 1884), from Georgia; E. segmentinotatus (Kuwert, 1888), from Ukraine. The aedeagus structure and the method of male genitalia preparation are discussed. An annotated list and a key to the species illustrated with original photographs and line drawings are provided, and the variability of the species is characterized. Placement of E. puetzi Hebauer, 1995 in the subgenus Lumetus is confirmed. A new synonymy is established: Enochrus ochropterus (Marsham, 1802) = Philhydrus ferrugineus Motschulsky, 1849, syn. n. The lectotype and paralectotype of Ph. ferrugineus are designated. The taxonomic status of E. asiaticus (Kuwert, 1893), E. calabricus (Ferro, 1976), and E. sahlbergi (Fauvel, 1887) is discussed.
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ACKNOWLEDGMENTS
We are very grateful to A.A. Gusakov and P.N. Petrov (Moscow, Russia) for the possibility of examining the type specimens of Philhydrus ferrugineus; to A. Pütz (Eisenhüttenstadt, Germany) for the photos of the type specimens of E. puetzi; to A.G. Kirejtshuk (St. Petersburg, Russia) for the possibility of examining the material in the ZIN collections; to V.V. Anikin (Saratov, Russia), V.G. Dyadichko (Odessa, Ukraine), S.N. Ivanov (Vladivostok, Russia), A.V. Kovalev (St. Petersburg, Russia), A.E. Kuzovenko (Samara, Russia), S.K. Ryndevich (Baranovichi, Belarus), A.S. Tilly (Samara, Russia), I.S. Turbanov and D.A. Philippov (Borok, Russia), and V.V. Shaporinsky (Simferopol, Russia) for the material provided.
Funding
The work of A.S. Sazhnev was supported by the Russian Science Foundation (project no. 21-74-20001); the work of A.A. Prokin was carried our within the framework of the Russia State research assignment 121051100109-1.
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The authors declare that they have no conflict of interest. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. All procedures performed in studies involving animals were in accordance with the ethical standards of the institution or practice at which the studies were conducted.
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Litovkin, S.V., Sazhnev, A.S. & Prokin, A.A. Species of the Subgenus Lumetus Zaitzev (Coleoptera, Hydrophilidae: Enochrus Thomson) of the Fauna of Russia and Adjacent Countries. Entmol. Rev. 101, 677–699 (2021). https://doi.org/10.1134/S0013873821050080
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DOI: https://doi.org/10.1134/S0013873821050080