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2020. New data on the little-known species of the water scavenger beetle Helophorus pitcheri Angus, 1970 (Coleoptera: Hydrophiloidea: Helophoridae). The Kharkiv Entomological Society Gazette. 28, 1 (Dec. 2020), 12–16. DOI:https://doi.org/10.36016/KhESG-2020-28-1-2.