A water beetle is a generalized name for any beetle that is adapted to living in water at any point in its life cycle. Most water beetles can only live in fresh water, with a few marine species that live in the intertidal zone or littoral zone. There are approximately 2000 species of true water beetles native to lands throughout the world.
The bean weevils or seed beetles are a subfamily (Bruchinae) of beetles, now placed in the family Chrysomelidae, though they have historically been treated as a separate family. They are granivores, and typically infest various kinds of seeds or beans, living most of their lives inside a single seed. The subfamily includes about 1,650 species and are found worldwide.
Spider beetles make up the subfamily Ptininae, in the family Ptinidae. There are approximately 70 genera and 600 species in the subfamily, with about 12 genera and 70 species in North America north of Mexico.
Anobiinae is a subfamily of death-watch beetles in the family Ptinidae, with at least 45 genera. It was formerly considered a member of the family Anobiidae, but its family name has since been changed to Ptinidae.
Scirtidae is a family of beetles (Coleoptera). These beetles are commonly referred to as marsh beetles, as the larvae are typically associated with stagnant water, but can be found in flowing water. Adults prefer decomposing plant material near the water's edge. More than an estimated 600 species are known worldwide, distributed among at least 60 genera.
Cantharinae is a subfamily of beetles in the family Cantharidae. There are at least 200 described species in Cantharinae.
Ptilodactylidae is a family of beetles belonging to the Elateriformia. There around 500 extant species in 35 genera. They are generally associated with riparian and aquatic habitats. The larvae generally live associated with rotting wood or vegetation, or within gravel and detritus on the edge of water bodies. The larvae of some species feed on submerged rotting wood or on plant roots, while the adults of some species are known to feed on fungus with modified brush-like maxillae.
Ptilodactyla hyperglotta is a species of toe-winged beetle in the family Ptilodactylidae. It is found in North America.
Ptilodactyla is a genus of toe-winged beetles in the family Ptilodactylidae. There are more than 30 described species in Ptilodactyla.
Anchycteis is a genus of toe-winged beetles in the family Ptilodactylidae. There is one described species in Anchycteis, A. velutina.
Lachnodactyla arizonica is a species of toe-winged beetle in the family Ptilodactylidae. It is found in North America.
Lachnodactyla is a genus of toe-winged beetles in the family Ptilodactylidae. There are at least two described species in Lachnodactyla.
Araeopidius is a genus of toe-winged beetles in the family Ptilodactylidae. There is one described species in Araeopidius, A. monachus.
Limnichinae is a subfamily of minute marsh-loving beetles in the family Limnichidae. There are more than 20 genera and 330 described species in Limnichinae.
Ptilodactyla nanoderma is a species of toe-winged beetle in the family Ptilodactylidae. It is found in North America.
Ptilodactyla angustata is a species of toe-winged beetle in the family Ptilodactylidae. It is found in North America.
Ptilodactyla serricollis is a species of toe-winged beetle in the family Ptilodactylidae. It is found in North America.
Anchytarsus is a genus of toe-winged beetles in the family Ptilodactylidae. There are at least two described species in Anchytarsus.
Thanerocleridae is a family of beetles belonging to the superfamily Cleroidea. It was formerly considered a subfamily of Cleridae, but was recently elevated to the rank of family. The family has 36 living species in 10 genera, which are found globally, mostly in low-latitude tropical regions, though the genus Zenodosus is found in temperate North America. Thaneroclerid species are likely all predatory both in adult and larval stages. They target small fungus and wood associated beetles, and are generally found in places where such beetles are likely to be found, typically tree associated habitats such as under bark, though some species occur in other locations such as termite nests.
