| Derallus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Hydrophilidae |
| Tribe: | Berosini |
| Genus: | Derallus Sharp, 1882 |
Derallus is a genus of water scavenger beetles in the family Hydrophilidae. There are about six described species in Derallus. [1] [2] [3]
These six species belong to the genus Derallus:
The Dytiscidae – based on the Greek dytikos (δυτικός), "able to dive" – are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species live among leaf litter. The adults of most are between 1 and 2.5 cm (0.4–1.0 in) long, though much variation is seen between species. The European Dytiscus latissimus and Brazilian Megadytes ducalis are the largest, reaching up to 4.5 and 4.75 cm respectively. In contrast, the smallest is likely the Australian Limbodessus atypicali of subterranean waters, which only is about 0.9 mm (0.035 in) long. Most are dark brown, blackish, or dark olive in color with golden highlights in some subfamilies. The larvae are commonly known as water tigers due to their voracious appetite. They have short, but sharp mandibles and immediately upon biting, they deliver digestive enzymes into prey to suck their liquefied remains. The family includes more than 4,000 described species in numerous genera.
Hydrochus is the only living genus of beetle in the family Hydrochidae, which belongs to the superfamily Hydrophiloidea, and was formerly treated as a subfamily of Hydrophilidae. Hydrochus includes about 180 species, which are found worldwide. The name "Hydrochus" has also been used for a fly genus in the family Dolichopodidae, but this is a junior subjective synonym of the genus Rhaphium.
Copelatus restrictus is a species of diving beetle. It is part of the genus Copelatus in the subfamily Copelatinae of the family Dytiscidae. It was described by Sharp in 1882.
Berosus is a genus of beetles in the family Hydrophilidae, the water scavenger beetles. The genus contains 273 species. It is distributed worldwide.
Enochrus, a genus of water scavenger beetles, is the third-largest genus of hydrophilids with 229 species in six subgenera worldwide.
Deltostethus is a genus of water scavenger beetles in the family Hydrophilidae. There are at least four described species in Deltostethus.
Nosodendron is a genus of wounded-tree beetles in the family Nosodendridae. There are more than 70 described species in Nosodendron.
Namunaria is a genus of cylindrical bark beetles in the family Zopheridae, first described by Edmund Reitter in 1882. There are at least two described species in Namunaria.
Hyphydrini is a tribe of predaceous diving beetles in the family Dytiscidae. There are about 16 genera and more than 390 described species in Hyphydrini.
Cybistrini is a tribe of predaceous diving beetles in the family Dytiscidae. There are 12 genera and 130 described extant species in Cybistrini. The same set is also called Cybistrinae by authors viewing it as a subfamily of Dytiscidae.
Chaetarthria is a genus of water scavenger beetles in the family Hydrophilidae. There are more than 20 described species in Chaetarthria.
Phanocerus is a genus of riffle beetles in the family Elmidae. There are about seven described species in Phanocerus.
Dactylosternum is a genus of water scavenger beetles in the family Hydrophilidae. There are more than 20 described species in Dactylosternum.
Pelosoma is a genus of water scavenger beetles in the family Hydrophilidae. There are about seven described species in Pelosoma.
Halobrecta is a genus of rove beetles in the family Staphylinidae. There are about six described species in Halobrecta.
Neocylloepus is a genus of riffle beetles in the family Elmidae. There are about eight described species in Neocylloepus.
Pelonomus is a genus of long-toed water beetles in the family Dryopidae. There are about five described species in Pelonomus.
Gymnochthebius is a genus of minute moss beetles in the family Hydraenidae. There are more than 60 described species in Gymnochthebius.
Phaenonotum is a genus of water scavenger beetles in the family Hydrophilidae. There are about nine described species in Phaenonotum.
Cryptopleurum is a genus of water scavenger beetles in the family Hydrophilidae. There are about 11 described species in Cryptopleurum.
 | This Hydrophilidae-related article is a stub. You can help Wikipedia by expanding it. |