| Psephenus | |
|---|---|
 | |
| Psephenus herricki | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Psephenidae |
| Subfamily: | Psepheninae |
| Genus: | Psephenus Haldeman, 1853 |
Psephenus is a genus of water penny beetles in the family Psephenidae. There are about 13 described species in Psephenus. [1] [2] [3]
These 13 species belong to the genus Psephenus:
Water-penny beetles are a family of 272 species of aquatic beetles found on all continents except Antarctica, in both tropical and temperate areas. The young, which live in water, resemble tiny pennies. The larvae feed – usually nocturnally – on algae on rock surfaces. The presence of water-penny larvae in a stream can be used as a test for the quality of the water, as they are pollution-sensitive. They cannot live in habitats where rocks acquire a thick layer of algae, fungi, or inorganic sediment. Therefore, their presence along with other diverse phyla signifies good-quality water. They are around 6 to 10 millimeters in length.
Eubriinae is an aquatic beetle subfamily in the family Psephenidae.
Harley Proctor Brown was an American biologist and an expert in certain types of aquatic beetles. He described over forty new species in his career.
Psephenus falli is a species of water penny beetle in the family Psephenidae. It is found in North America.
Psephenus herricki is a species of water penny beetle in the family Psephenidae. It is found in North America.
Hexacylloepus is a genus of riffle beetles in the family Elmidae. There are about 19 described species in Hexacylloepus.
Dicranopselaphus variegatus, the variegated false water penny beetle, is a species of water penny beetle in the family Psephenidae. It is found in North America.
Dicranopselaphus is a genus of water penny beetles in the family Psephenidae. There are about seven described species in Dicranopselaphus.
Ectopria leechi is a species of water penny beetle in the family Psephenidae. It is found in North America.
Ectopria is a genus of water penny beetles in the family Psephenidae. There are about nine described species in Ectopria.
Acneus quadrimaculatus is a species of water penny beetle in the family Psephenidae. It is found in North America.
Acneus is a genus of water penny beetles in the family Psephenidae. There are at least four described species in Acneus.
Zaitzevia is a genus of riffle beetles in the family Elmidae. There are about 19 described species in Zaitzevia. The genus is named after the Russian entomologist Filipp Zaitsev (ru).
Pelonomus is a genus of long-toed water beetles in the family Dryopidae. There are about five described species in Pelonomus.
Eubrianax edwardsii is a species of water penny beetle in the family Psephenidae. It is found in North America.
Eubrianax is a genus of water penny beetles in the family Psephenidae. There are about 12 described species in Eubrianax.
Ectopria nervosa is a species of water penny beetle in the family Psephenidae. It is found in North America.
Huleechius is a genus of riffle beetles in the family Elmidae. There are at least two described species in Huleechius.
Postelichus is a genus of long-toed water beetles in the family Dryopidae. There are at least four described species in Postelichus.
Psephenus texanus, the Texas water penny, is a species of water penny beetle in the family Psephenidae. It is found in North America.
 | This Elateriformia-related article is a stub. You can help Wikipedia by expanding it. |