Spercheus is a genus of aquatic beetles which are placed in a family of their own, Spercheidae within the Hydrophiloidea. About 20 species are known from around the world except the Nearctic with the majority being from the Oriental and Afrotropical Realms.
Dytiscus is a Holarctic genus of predaceous diving beetles that usually live in wetlands and ponds. There are 26 species in this genus distributed in Europe, Asia, North Africa and North and Central America. They are predators that can reduce mosquito larvae.
Phyllophaga is a very large genus of New World scarab beetles in the subfamily Melolonthinae. Common names for this genus and many other related genera in the subfamily Melolonthinae are May beetles, June bugs, and July beetles. They range in size from 12 to 35 mm and are blackish or reddish-brown in colour, without prominent markings, and often rather hairy ventrally. These beetles are nocturnal, coming to lights in great numbers.
Cryptolaemus montrouzieri, common name mealybug ladybird or mealybug destroyer, is a species of ladybird beetle native to eastern Australia. The beetle feeds on mealybugs and other scale insects, and is used to control those pests on citrus orchards worldwide.
Galeruca tanaceti is a species of leaf beetle found in the Palearctic realm, and is the type species of the genus Galeruca. It feeds on various plants in both its adult and larval stages. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae.
Gnathaphanus is a genus in the beetle family Carabidae. There are more than 20 described species in Gnathaphanus.
Chlaenius purpuricollis is a species of ground beetle in the large and diverse genus Chlaenius. It is found in the United States and Canada.
Tefflus is a genus of large, black and flightless Afrotropical ground beetles in the tribe Panagaeini. They are broadly similar to the Anthiini ('oogpisters'), but are not colourful, and have a six-sided and flattish pronotum. The distinct longitudinal carinae (ridges) on their elytra are separated by two rows of punctures running along the striae (grooves). Males have some segments of the forelegs enlarged.
Geoscaptus is a genus of beetles in the family Carabidae, containing the following species:
Epomis is a subgenus of ground beetle genus Chlaenius. The larvae of this subgenus are notable for being obligate role-reversal predators. Amphibians such as frogs are normally predators of beetles; however, Epomis larvae feed exclusively on amphibians.
Chlaenius circumscriptus is a species of ground beetle native to the Palearctic, the Near East, and North Africa.
Chlaenius nigricans is a species of ground beetle native to the Palearctic. It is known from Borneo, China, India, Indonesia, Japan, Myanmar, North Korea, South Korea, Sri Lanka, and Taiwan.
Anisodactylus binotatus is a species of ground beetle native to Europe. It was discovered as being introduced to Canterbury, New Zealand in 1938. Anisodactylus binotatus is a species of Carabidae, also known as the ground beetle family. Although this species of beetle has no official recorded common names, literature from England refers to it as the common shortspur beetle.
Chlaenius pimalicus is a species of ground beetle in the family Carabidae. It is found in North America.
Chlaenius floridanus is a species of ground beetle in the family Carabidae. It is found in North America.
Chlaenius obsoletus is a species of ground beetle in the family Carabidae. It is found in North America.
Chlaenius oxygonus is a species of ground beetle in the family Carabidae. It is found in North America.
Chlaenius flaccidus is a species of ground beetle in the family Carabidae. It is found in North America.
Chlaenius aestivus is a species of beetle of the family Carabidae.
Dytiscacarus is a genus of trombidiform mites that are sub-elytral parasites of diving beetles (Dytiscidae). It is in the monotypic family Dytiscacaridae, and comprises three species. It has been recorded from Iran and the United States.
