Hydrophilidae, also known colloquially as water scavenger beetles, is a family of beetles. Aquatic hydrophilids are notable for their long maxillary palps, which are longer than their antennae. Several of the former subfamilies of Hydrophilidae have recently been removed and elevated to family rank; Epimetopidae, Georissidae, Helophoridae, Hydrochidae, and Spercheidae. While the majority of hydrophilids are aquatic, around a third of described species are terrestrial, mostly belonging to the subfamily Sphaeridiinae.
Hydrophilus is a genus of beetles in the family Hydrophilidae, the water scavenger beetles. There are 53 species in three subgenera in the genus: Hydrophilus, Dibolocelus, and Temnopterus.
Hydrophilus piceus is a species of beetles in the family Hydrophilidae, the water scavenger beetles. This very large aquatic beetle is found in the Palearctic and is known by the common name great silver water beetle.
Hydrophilus caschmirensis, common name large scavenging water beetle, is a species of water scavenger beetle belonging to the family Hydrophilidae.
Hydrophilus palpalis is a species of water scavenger beetles belonging to the Hydrophilinae subfamily.
Acidocerinae is a subfamily in the family Hydrophilidae of aquatic beetles, and it contains over 500 species in 23 genera.
Chasmogenus is a Neotropical genus of water scavenger beetles belonging to the family Hydrophilidae.
Hydrobiomorpha is a genus of water scavenger beetles in the family Hydrophilidae. There are 56 extant described species in Hydrobiomorpha, along with several fossil species.
Hydrophilus triangularis, known generally as the giant black water beetle or giant water scavenger, is a species of water scavenger beetle in the family Hydrophilidae. It is the most common and widespread species of Hydrophilus in North America, being found across the contiguous United States, southern Canada, and Mexico.
Cercyon quisquilius is a species of water scavenger beetle in the family Hydrophilidae. It is found in Africa, Australia, Europe and Northern Asia, Central America, North America, Oceania, South America, and Southern Asia.
Cercyon marinus is a species of water scavenger beetle in the family Hydrophilidae. It is found in Europe and Northern Asia, North America, and Southern Asia.
Cercyon assecla is a species of water scavenger beetle in the family Hydrophilidae. It is found in North America.
Hydrophilus insularis is a species of water scavenger beetle in the family Hydrophilidae. It is found from northern South America north throughout the Caribbean, Central America, and Mexico into southern Arizona, California, Texas, and Florida in the United States.
Hydrophilus ensifer is a species of water scavenger beetle in the family Hydrophilidae found in the Americas. As of 2020, there are two valid subspecies of H. ensifer, H. e. ensifer and H. e. duvali, however the differences among the subspecies are not well understood.
Crephelochares abnormalis, is a species of water scavenger beetle found in Cambodia, Sri Lanka, Taiwan, Thailand, Vietnam, Ryukyu Islands and Indonesia: Borneo, Java, Sulawesi, Sumatra.
Coelostoma (Holocoelostoma) stultum, is a species of water scavenger beetle widely distributed in Palearctic and Oriental realms from West Pacific towards Indian Ocean, such as China, Taiwan, Andaman Islands, Myanmar, India, Indonesia, Japan, Korea, Malaysia, Mascarene Islands, Nicobar Islands, Oman, Philippines, Saudi Arabia, South Korea, Sri Lanka, Thailand, United Arab Emirates, Oman, and Vietnam.
Sternolophus inconspicuus, is a species of water scavenger beetle found in India, Sri Lanka, Tibet, Hong Kong, Vietnam and the Philippines.
Sternolophus rufipes is a species of water scavenger beetle found in India, Sri Lanka, China, South Korea and the Philippines.
Agraphydrus is a genus of water scavenger beetle in the family Hydrophilidae represented by 205 described species. It is distributed across the Afrotropical, Australasian, and Indomalayan realms.
Radicitus is a Neotropical genus of water scavenger beetle in the family Hydrophilidae represented by three described species known from the Guiana Shield Region.
