The Trachypachidae are a family of beetles that generally resemble small ground beetles, but that are distinguished by the large coxae of their rearmost legs. There are only six known extant species in the family, with four species of Trachypachus found in northern Eurasia and northern North America, and two species of Systolosoma in Chile and Argentina. They were much more diverse in the past, with dozens of described species from the Mesozoic.
Catiniidae is an extinct family of beetles in the order Coleoptera.
Colymbothetidae is an extinct family of beetles in the suborder Adephaga. Colymbothethis is known from larvae from the Upper Triassic of Kazakhstan. They probably belong to the Dytiscoidea.
Coptoclavidae is an extinct family of aquatic beetles in the suborder Adephaga. The Coptoclavidae lived from the Late Triassic to the Early Cretaceous. Coptoclavidae is a member of the adephagan clade Dytiscoidea, which contains other aquatic beetles. Suggested reasons for their extinction to include the rise of teleost fish, or competition with Gyrinidae and Dytiscidae, which possess defensive secretions and sucking channels in the mandibles of larvae, which coptoclavids likely lacked. It has been suggested that the genus Timarchopsis and the subfamily Timarchopsinae are only distantly related to other coptoclavids based on cladistic analysis, with Timarchopsis being more closely related to geadephagans like carabids and trachypachids instead. Another study also suggested similarly for Coptoclavisca and possibly other coptoclaviscines.
Parahygrobia natans is an extinct species of adephagan beetle. It is the only member of the genus Parahygrobia and family Parahygrobiidae. It is known only from larvae from the Late Jurassic of Russia. Cladistic analysis has placed it as the sister group to extant Hygrobiidae.
The Ommatidae are a family of beetles in the suborder Archostemata. The Ommatidae are considered the extant beetle family that has most ancestral characteristics. There are only seven extant species, confined to Australia and South America. However, the geographical distribution was much wider during the Mesozoic spanning across Eurasia and Australia, suggesting that they were widespread on Pangea. So far, over 26 extinct genera containing over 170 species of these beetles have been described. Three extant genera have been assigned to this family: Omma,Tetraphalerus and Beutelius. The family is considered to be a subfamily of Cupedidae by some authors, but have been found to be more closely related to Micromalthidae in molecular phylogenies. A close relationship with Micromalthidae is supported by several morphological characters, including those of the mandibles and male genitalia. Due to their rarity, their ecology is obscure, it is likely that their larvae feed on deadwood.
Cretodytes is an extinct genus of beetles in the family Dytiscidae, containing the following species:
Palaeodytes is an extinct genus of beetles in the family Dytiscidae, containing the following species:
This list of fossil arthropods described in 2013 is a list of new taxa of trilobites, fossil insects, crustaceans, arachnids and other fossil arthropods of every kind that have been described during the year 2013. The list only includes taxa at the level of genus or species.
Liadytiscinae is a subfamily of extinct predaceous diving beetles in the family Dytiscidae. There are about 5 genera and 10 described species in Liadytiscinae. All currently known members of the subfamily are known from the Early Cretaceous Jehol Biota of China.
Liadroporus is an extinct genus of predaceous diving beetles in the family Dytiscidae. There is one described species in Liadroporus, L. elegans.
Liadytiscus is an extinct genus of predaceous diving beetles in the family Dytiscidae. There are at least three described species in Liadytiscus.
Mesoderus is an extinct genus of predaceous diving beetles in the family Dytiscidae. There are at least four described species in Mesoderus.
Liadyxianus is an extinct genus of predaceous diving beetles in the family Dytiscidae. There is one described species in Liadyxianus, L. kirejtshuki.
Mesodytes is an extinct genus of predaceous diving beetles in the family Dytiscidae. There is one described species in Mesodytes, M. rhantoides.
2018 in paleoentomology is a list of new fossil insect taxa that were described during the year 2018, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
2017 in paleoentomology is a list of new fossil insect taxa that were described during the year 2017, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
2015 in paleoentomology is a list of new fossil insect taxa that were described during the year 2016, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
2015 in paleoentomology is a list of new fossil insect taxa that were described during the year 2015, as well as other significant discoveries and events related to paleoentomology that were scheduled to occur during the year.
This paleoentomology list records new fossil insect taxa that were described during the year 2014, as well as notes other significant paleoentomology discoveries and events which occurred during that year.
