| Trematocephalus | |
|---|---|
 | |
| Trematocephalus cristatus, male | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Linyphiidae |
| Genus: | Trematocephalus Dahl, 1886 [1] |
| Type species | |
| Trematocephalus cristatus | |
| Species | |
| |
Trematocephalus is a genus of sheet weavers first described by Friedrich Dahl in 1886. [2]
As of 2017 [update] , it contains only four species: [1]
The Thomisidae are a family of spiders, including about 175 genera and over 2,100 species. The common name crab spider is often linked to species in this family, but is also applied loosely to many other families of spiders. Many members of this family are also known as flower spiders or flower crab spiders.
Linyphiidae is a family of very small spiders comprising 4667 described species in 618 genera worldwide. This makes Linyphiidae the second largest family of spiders after the Salticidae. The family is poorly known; new genera and species are still being discovered throughout the world. The newest such genus is Yuelushannus from China, formally described in May 2020. Because of the difficulty in identifying such tiny spiders, there are regular changes in taxonomy as species are combined or divided.
Long-jawed orb weavers or long jawed spiders (Tetragnathidae) are a family of araneomorph spiders first described by Anton Menge in 1866. They have elongated bodies, legs, and chelicerae, and build small orb webs with an open hub with few, wide-set radii and spirals with no signal line or retreat. Some species are often found in long vegetation near water.
Zoropsidae, also known as false wolf spiders for their physical similarity to wolf spiders, is a family of cribellate araneomorph spiders first described by Philipp Bertkau in 1882. They can be distinguished from wolf spiders by their two rows of eyes that are more equal in size than those of Lycosidae.
The ray spiders (Theridiosomatidae) are a family of spiders first described by Eugène Simon in 1881. They are most recognizable for their construction of cone-shaped webs.
Ordgarius is a genus of orb-weaver spiders first described by Eugen von Keyserling in 1886. Adult females of the genus are bolas spiders, capturing their prey with one or more sticky drops at the end of a single line of silk rather than in a web. Males and juvenile females capture their prey directly with their legs.
Clitaetra is a genus of spiders in a family Araneidae. It was formerly placed in a separate family, Nephilidae. It occurs in Africa, Madagascar and Sri Lanka, hinting to a Gondwanan origin. a split between Clitaetra and related genera may be as old as 160 million years.
Copa is a genus of corinnid sac spiders first described by Eugène Simon in 1886.
Alistra is a genus of dwarf sheet spiders that was first described by Tamerlan Thorell in 1894.
Atypena is a genus of Asian dwarf spiders that was first described by Eugène Louis Simon in 1894.
Trematocephalus simplex, is a species of spider of the genus Trematocephalus. It is endemic to Sri Lanka.
Trematocephalus tripunctatus, is a species of spider of the genus Trematocephalus. It is endemic to Sri Lanka.
Centromerus is a genus of dwarf spiders that was first described by David B. Hirst in 1886.
Hypomma is a genus of dwarf spiders that was first described by David B. Hirst in 1886.
Macrargus is a genus of dwarf spiders that was first described by Friedrich Dahl in 1886.
Micrargus is a genus of dwarf spiders that was first described by Friedrich Dahl in 1886.
Microctenonyx is a genus of dwarf spiders that was first described by Friedrich Dahl in 1886.
Moebelia is a genus of dwarf spiders that was first described by Friedrich Dahl in 1886. As of May 2019 it contains only three species, found in China, Germany, and Russia: M. berolinensis, M. penicillata, and M. rectangula.