''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of ''

Caponiidae Caponiidae is a family of ecribellate haplogyne spiders that are unusual in a number of ways. They differ from other spiders in lacking book lungs and having the posterior median spinnerets anteriorly displaced to form a transverse row with the a ...

'', though the two are not closely related. The eyes are large, but unequal in size, closely grouped around the center of the

prosoma The cephalothorax, also called prosoma in some groups, is a tagma of various arthropods, comprising the head and the thorax fused together, as distinct from the abdomen behind. (The terms ''prosoma'' and ''opisthosoma'' are equivalent to ''cepha ...

that rises in a somewhat of a cone shape from the abdomen. They have four closely positioned spinnerets enclosed in a corneous casing.

Species

, the

World Spider Catalog The World Spider Catalog (WSC) is an online searchable database concerned with spider taxonomy. It aims to list all accepted families, genera and species, as well as provide access to the related taxonomic literature. The WSC began as a series of ...

accepted the following species: *''

Tetrablemma alaus ''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of '' Caponiidae'', though the two are not cl ...

'' Burger, Harvey & Stevens, 2010 – Australia (Western Australia) *'' Tetrablemma alterum'' Roewer, 1963 – Micronesia *'' Tetrablemma benoiti'' (Brignoli, 1978) – Seychelles *''

Tetrablemma brevidens ''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of ''Caponiidae'', though the two are not cl ...

'' Tong & Li, 2008 – China *''

Tetrablemma brignolii ''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of ''Caponiidae'', though the two are not cl ...

'' Lehtinen, 1981 – India *'' Tetrablemma deccanense'' (Tikader, 1976) – India *'' Tetrablemma extorre'' Shear, 1978 – Trinidad *''

Tetrablemma helenense ''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of ''Caponiidae'', though the two are not clo ...

'' Benoit, 1977 – St. Helena *'' Tetrablemma kepense'' Lin, Li & Jäger, 2018 – Cambodia *'' Tetrablemma loebli'' Bourne, 1980 – India *''

Tetrablemma magister ''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of ''Caponiidae'', though the two are not clo ...

'' Burger, 2008 – Australia (Queensland) *''

Tetrablemma manggarai ''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of '' Caponiidae'', though the two are not cl ...

'' Lehtinen, 1981 – Indonesia (Flores) *''

Tetrablemma marawula ''Tetrablemma'' is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873. It only has four eyes; an unusual trait for spiders, found only here and in some species of ''Caponiidae'', though the two are not cl ...

'' Lehtinen, 1981 – Indonesia (Sulawesi) *'' Tetrablemma mardionoi'' Lehtinen, 1981 – Indonesia (Sumatra) *'' Tetrablemma medioculatum'' O. Pickard-Cambridge, 1873 (

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

) – Sri Lanka *'' Tetrablemma menglaense'' Lin & Li, 2014 – China *'' Tetrablemma namkhan'' Lin, Li & Jäger, 2012 – Laos *'' Tetrablemma nandan'' Lin & Li, 2010 – China *'' Tetrablemma okei'' Butler, 1932 – Australia (Victoria) *'' Tetrablemma phulchoki'' Lehtinen, 1981 – Nepal *'' Tetrablemma rhinoceros'' (Brignoli, 1974) – Angola *'' Tetrablemma samoense'' Marples, 1964 – Samoa *'' Tetrablemma sokense'' Lin, Li & Jäger, 2018 – Cambodia *'' Tetrablemma thamin'' Labarque & Grismado, 2009 – Myanmar *'' Tetrablemma viduum'' (Brignoli, 1974) – Angola *'' Tetrablemma vietnamense'' Lehtinen, 1981 – Vietnam *'' Tetrablemma ziyaoense'' Lin & Li, 2014 – China

References

Tetrablemmidae Araneomorphae genera Spiders of Asia Spiders of Africa Spiders of the Caribbean {{Tetrablemmidae-stub