Byrrhoidea genera

Byrrhus is a genus of pill beetles in the family Byrrhidae. There are at least 30 described species in Byrrhus.

Stenelmis is the largest and most widespread genus of beetles in the family Elmidae.

Beetles of the genus Helichus are found worldwide apart from in Australia and Antarctica. Adults reach long and live in aquatic or riparian environments. The larvae are land-dwelling which may be unique in water living insects.

Simplocaria is a genus of pill beetles in the family Byrrhidae. There are more than 30 described species in Simplocaria. thumb|Simplocaria semistriata

Cytilus is a genus of pill beetles in the family Byrrhidae. There are about eight described species in Cytilus. thumb

Curimopsis is a genus of pill beetles in the family Byrrhidae. There are more than 30 described species in Curimopsis. thumb|Curimopsis setigera

Caccothryptus is a genus of minute marsh-loving beetles in the subfamily Limnichinae. The genus was formally established (circumscribed) by the entomologist David Sharp in 1902, with C. compactus as the type species. In 2014, the entomologists Carles Hernando and Ignacio Ribera published a major revision of the genus, reorganizing it from seven species into twenty species in five species groups, classified mainly by similarities in genital shape. Discoveries in the following years have brought the total number of species up to thirty-four. Due to the relative lack of studies and material on As

Phanocerus is a genus of riffle beetles in the family Elmidae. It is primarily Neotropical, with one species (Phanocerus clavicornis) reaching the Nearctic realm.

Limnichus is a genus of beetles belonging to the family Limnichidae.

Limnichites is a genus of minute marsh-loving beetles in the family Limnichidae. There are about 15 described species in Limnichites.

Grouvellinus is a genus of beetle in the family Elmidae. , over forty species are recognized, including:

genus of insects

genus of insects

Narpus is a genus of riffle beetles in the family Elmidae. They are found in western North America. They are associated with clean, fast flowing streams.

Postelichus is a genus of long-toed water beetles in the family Dryopidae. There are seven described species in Postelichus.

Throscinus is a genus of minute marsh-loving beetles in the family Limnichidae. There are about eight described species in Throscinus.

Chelonarium is a genus of turtle beetles in the family Chelonariidae. There are about 14 described species in Chelonarium.

Heterlimnius is a genus of riffle beetles in the family Elmidae. When Optioservus and Gonielmis are synonymized with Heterlimnius in 2021, there are around 30 described species in Heterlimnius. Sources that recognize these genera as valid list fewer species.

Eulimnichus is a genus of minute marsh-loving beetles in the family Limnichidae. There are more than 20 described species in Eulimnichus, found in North, Central, and South America.

Heterelmis is a genus of beetles in the riffle beetle family Elmidae.

genus of insects

Limnichoderus is a genus of minute marsh-loving beetles in the family Limnichidae. There are at least 20 described species in Limnichoderus.

Pelonomus is a genus of long-toed water beetles in the family Dryopidae. There are about five described species in the genus Pelonomus.

Callirhipis is a genus of beetles in the family Callirhipidae. It was described by Pierre André Latreille in 1829.

Dicranopselaphus is a genus of water-penny beetles in the family Psephenidae. There are over 40 described species in Dicranopselaphus, distributed in Asia and North America.

Lioligus is a genus of pill beetles in the family Byrrhidae. There are at least 2 described species in Lioligus.

Ctenelmis is a genus of riffle beetles (insects in the family Elmidae). Species are found near rivers in South Africa.

Physemus is a genus of minute marsh beetles in the family Limnichidae. There are currently six described species.

Lioon is a genus of pill beetles in the family Byrrhidae. There are at least four described species in Lioon.

Elmomorphus is a genus of long-toe water beetles in the family Dryopidae.

Listemus is a genus of pill beetles in the family Byrrhidae. There are at least four described species in Listemus.

genus of insects

Acneus is a genus of water-penny beetles in the family Psephenidae.

Ectopria is a genus of water penny beetles in the family Psephenidae. There are about nine described species in Ectopria.

Arctobyrrhus is a genus of pill beetles in the family Byrrhidae. There are at least two described species in Arctobyrrhus.

Ancyronyx, commonly known as spider water beetles or spider riffle beetles, is a genus of aquatic riffle beetles from North America, South Asia, China, and Southeast Asia. They are small beetles with extremely long legs ending in strong claws. Both the adults and the larvae are found underwater in the shallow riffles of streams and rivers, clinging to rocks or submerged wood. They feed on algae and decaying wood tissue. The genus contains twenty-one species, eleven of which are endemic to the Philippines.

Psephenus is a genus of water penny beetles in the family Psephenidae. There are about 13 described species in Psephenus.

Eubria is a genus of beetles in the family Psephenidae.