Helochares | |
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Helochares lividus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Coleoptera |
Family: | Hydrophilidae |
Subfamily: | Hydrophilinae |
Tribe: | Hydrophilini |
Genus: | Helochares Mulsant, 1844 |
Diversity | |
158 species + 3 subspecies | |
Synonyms | |
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Helochares is a genus of water scavenger beetles in the family Hydrophilidae, represented by 161 described species. It is distributed across the Afrotropical, Australasian, Indo-Malayan, Nearctic, and Palearctic realms. [1]
Helochares is one of the largest and most taxonomically problematic genera within the Acidocerinae. It was originally described by Étienne Mulsant in 1844. [2]
For a long time Helochares contained five subgenera: Batochares (currently recognized as a separate genus [3] ), Helochares, Helocharimorphus (now synonymized under Helochares [1] ), Hydrobaticus (now synonymized under Helochares [1] ), and Sindolus (currently recognized as a separate genus [3] ).
Several taxa that used to be recognized as typical Helochares are now assigned to newly created genera (e.g., Colossochares , Novochares ) or re-assigned to exinsting genera (i.e., Peltochares ), based on a phylogenetic analysis based on molecular data. [3]
As currently defined, Helochares contains small to medium-sized beetles (2–7 mm), which are yellowish to brown in coloration. There is a lot of variation in the impression of the elytral punctation, and the aedeagal forms are also highly variable (see Figure 37 in Girón and Short 2021). [1] A detailed diagnosis can be found in Girón and Short 2021. [1]
Spercheus is a genus of aquatic beetles which are placed in a family of their own, Spercheidae within the Hydrophiloidea. About 20 species are known from around the world except the Nearctic with the majority being from the Oriental and Afrotropical Realms.
Copelatus is a large genus of small diving beetles. There are some 470 described species in the genus, found worldwide, but they are most diverse in tropical South America, Africa and South-East Asia. Copelatus are often black or brown in color, many species of Copelatus possessing visible longitudinal furrows down the dorsal side of the wings of both sexes.
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.
Enochrus, a genus of water scavenger beetles, is the third-largest genus of hydrophilids with 229 species in six subgenera worldwide.
Acidocerinae is a subfamily in the family Hydrophilidae of aquatic beetles, and it contains over 500 species in 23 genera.
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.
Dactylosternum is a genus of water scavenger beetles in the family Hydrophilidae. There are more than 20 described species in Dactylosternum.
Coelostoma is a genus of beetles belonging to the family Hydrophilidae. The genus was first described by Brullé in 1835. The genus has cosmopolitan distribution, with 111 described species, representing one of the most diverse genera of Hydrophilidae.
Acidocerus aphodioides is a species of water scavenger beetle in the family Hydrophilidae. It is the only species in the genus Acidocerus. It is known only from Mozambique.
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.
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.
Batochares is an Afrotropical genus of water scavenger beetle in the family Hydrophilidae represented by three described species.
Colossochares is an Afrotropical genus of water scavenger beetle in the family Hydrophilidae represented by two described species.
Crephelochares is a genus of water scavenger beetle in the family Hydrophilidae represented by 29 described species. It is distributed across the Afrotropical, Australasian, Indo-Malayan, and Palaearctic realms.
Helopeltarium is a genus of water scavenger beetle in the family Hydrophilidae represented by only one species. It is known only from Myanmar.
Novochares is a primarily Neotropical genus of water scavenger beetles in the family Hydrophilidae represented by 15 described species, one of which is thought to be introduced in Florida in the United States of America.
Peltochares is a genus of water scavenger beetles in the family Hydrophilidae represented by eight described species. It is distributed across the Afrotropical, Australasian, Indo-Malayan, and Palaearctic realms.
Sindolus is a Neotropical genus of water scavenger beetles in the family Hydrophilidae represented by eight described species, ranging from Mexico to Argentina, and including one species recorded from Antigua in the Lesser Antilles.
Allocotocerus is a genus of water beetles in the family Hydrophilidae, first described by Ernst Gustav Kraatz in 1883. The decision for synonymy is based on Hansen (1999).