| Acneus quadrimaculatus | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Psephenidae |
| Genus: | Acneus |
| Species: | A. quadrimaculatus |
| Binomial name | |
| Acneus quadrimaculatus Horn, 1880 | |
Acneus quadrimaculatus is a species of water penny beetle in the family Psephenidae. [1] [2] [3] [4] It is found in North America. [1]
Corylophidae is a family of minute hooded beetles, sometimes called minute fungus beetles, in the order Coleoptera. There are about 18 genera and at least 120 described species in Corylophidae.
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.
Cassida is a large Old World genus of tortoise beetles in the subfamily Cassidinae. Several species of Cassida are important agricultural pests, in particular C. vittata and C. nebulosa on sugar beet and spinach. The thistle tortoise beetle has been used as a biological control agent against Canada thistle.
Strigocis is a genus of minute tree-fungus beetles in the family Ciidae. There are at least five described species in Strigocis.
Psephenus falli is a species of water penny beetle in the family Psephenidae. It is found in North America.
Psephenus is a genus of water penny beetles in the family Psephenidae. There are about 13 described species in Psephenus.
Psephenus herricki is a species of water penny beetle in the family Psephenidae. It is found in North America.
Leptohoplia is a genus of shining leaf chafers in the family of beetles known as Scarabaeidae. There are at least two described species in Leptohoplia.
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.
Ilybius quadrimaculatus is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.
Oreodytes quadrimaculatus is a species of predaceous diving beetle in the family Dytiscidae. 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.
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.
Optioservus quadrimaculatus is a species of riffle beetle in the family Elmidae. It is found in North America.
Ectopria nervosa is a species of water penny beetle in the family Psephenidae. It is found in North America.
Psephenus texanus, the Texas water penny, is a species of water penny beetle in the family Psephenidae. It is found in North America.
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