Tiger beetles are a family of beetles, Cicindelidae, known for their aggressive predatory habits and running speed. The fastest known species of tiger beetle, Rivacindela hudsoni, can run at a speed of 9 km/h, or about 125 body lengths per second. As of 2005, about 2,600 species and subspecies were known, with the richest diversity in the Oriental (Indo-Malayan) region, followed by the Neotropics. While historically treated as a subfamily of ground beetles (Carabidae) under the name Cicindelinae, several studies since 2020 indicated that they should be treated as a family, the Cicindelidae, which are a sister group to Carabidae within the Adephaga.
The telephone-pole beetle is a beetle native to the eastern United States, and the only living representative of the otherwise extinct family Micromalthidae. They have an unusual lifecycle involving asexually reproducing (parthenogenetic) female larvae, as well as non-functional "ghost adults".
Passalidae is a family of beetles known variously as "bessbugs", "bess beetles", "betsy beetles" or "horned passalus beetles". Nearly all of the 500-odd species are tropical; species found in North America are notable for their size, ranging from 20–43 mm, for having a single "horn" on the head, and for a form of social behavior unusual among beetles.
Syntelia is a genus of beetles. It is the only genus in the family Synteliidae. There are seven known species, which are native to high-elevation regions in southern North America from central Mexico to Guatemala, and in eastern Asia, from India to Japan and eastern Russia. They are generally associated with rotting logs, typically found under bark, thought the Mexican species S. westwoodi has been found inside large decaying columnar cacti. Adults and larvae are predatory, feeding on insect larvae. A fossil species, Syntelia sunwukong, is known from the Late Cretaceous (Cenomanian) aged Burmese amber of Myanmar. Adults are around 1–3.5 centimetres (0.39–1.38 in) in length. The characteristics of the family and genus include geniculate antennae with 3-segmented club, elongate body, narrowly separated coxae and tarsi with bisetose empodia. Only one abdominal segment is exposed behind elytra. The genus described by John O. Westwood in 1864, while the family was erected by George Lewis in 1882. They are members of Histeroidea, which also includes clown beetles (Histeridae).
Ant nest beetles or paussines, some members of which are known also as flanged bombardier beetles, are a large subfamily within the ground beetles (Carabidae).The tribes Metriini, Ozaenini, Paussini and Protopaussini are included in the subfamily.
Endomychidae, or handsome fungus beetles, is a family of beetles with representatives found in all biogeographic realms. There are around 120 genera and 1300 species. The family was established based on the type genus Endomychus, a genus erected in 1795 by Panzer which was applied to a species that Linnaeus called Chrysomela coccinea. As the common name suggests, Endomychidae feed on fungi. Crowson, in his influential treatment of the beetles, placed the family within the Cucujoidea. They have a tarsal formal of 4-4-4 or 3-3-3 and the wings lack a closed radial cell. The second antennal segment has a sensory appendage that is as long as the third antennal segment. The family has also been grouped with the Coccinellidae in a group called the Trimera for having pseudotrimerous tarsi. A 2015 molecular phylogeny study found that the Cucujoidea were found to be non-monophyletic and the Endomychidae was refined with the removal of the Anamorphinae from within the family and elevated to the status of a full family, Anamorphidae. Mycetaeinae and Eupsilobiinae were also found not to belong within the clades of the core Endomychidae, and likewise reclassified into the families Mycetaeidae and Eupsilobiidae.
Niphopyralis is a genus of snout moths of the subfamily Spilomelinae in the family Crambidae.
Helotidae is a family of beetles, in the suborder Polyphaga. The family includes about five extant genera, Helota MacLeay, Neohelota Ohta, Afrohelotina Kirejtshuk, Metahelotella Kirejtshuk, and Strophohelota Kirejtshuk. Helotidae are found mainly in the Old World tropics and are absent from Australia and Madagascar. The antennae are clubbed on the final three segments and is retractable within grooves under the head. The wings have reduced venation with just 4 anal veins. Helotids are known to be associated with sap, fruit and flowers, and the larvae of some species are known to bore into wood in order to pupate.
Melanospilus is a genus of flanged-bombardier beetles or paussines in the family Carabidae, containing the following species: The genus is considered to belong to the subtribe Ceratoderina and all members are thought to be myrmecophiles. The ant host Paratrechina longicornis is known for M. bensoni.
Paussus is a genus of ground beetles in the family Carabidae. There are more than 360 described species in Paussus, found in Africa, Europe, and Asia.
Pentaplatarthus is a genus of beetles in the family Carabidae, containing the following species:
Pseudomorphinae is a subfamily of ground beetles in the family Carabidae. There are about 12 genera and at least 360 described species in Pseudomorphinae.
Embolemidae is a family of small solitary parasitoid wasps with around 70 species in 2 genera distributed around the world. The few species whose biology is known are parasites on planthopper nymphs of the families Achilidae and Cixiidae. There is debate regarding the status of the genus named Ampulicomorpha by Ashmead in 1893, generally considered now to be a junior synonym of Embolemus (e.g.,), though some authorities dispute this (e.g.,)
Goniotropis kuntzeni is a species of ground beetle in the family Carabidae. It is found in Central America and North America. Adults can be found on trees at night. Larvae dig burrows that they close off with their terminal disk, capturing prey with their terminal disk and dragging prey into the burrow.
Omophron obliteratum, the effaced round sand beetle, is a species of ground beetle in the family Carabidae. It is found in Central America and North America.
Lebia calliope is a species of beetle in the family Carabidae. It is found in Guatemala, Mexico and the U.S. state of Texas.
Rhadine ozarkensis is a species of ground beetle in the family Carabidae. It is found in North America.
Platyrhopalopsis melleii is a species of ant-nest or flanged bombardier beetle found in southern India. They live inside the nests of ants of the genus Carebara and adults are only rarely seen in the open, most often at night when they get attracted to lights.
Celaenagonum is a genus of ground beetles in the family Carabidae. There are about eight described species in Celaenagonum, found in Asia.
Platyrhopalopsis is a genus of flanged-bombardier beetles in the family Carabidae. They are found within ant nests, in the Indo-Malayan region. This genus has a single species, Platyrhopalides badgleyi, formerly a member of the genus Platyrhopalopsis. It is found in China, Bhutan, and India.
