Tetrablemma

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Chelicerata
Classis: Arachnida
Ordo: Araneae
Subordo: Opisthothelae
Infraordo: Araneomorphae
Taxon: Neocribellatae
Series: Haplogynae
Superfamilia: Caponioidea

Familia: Tetrablemmidae
Genus: Tetrablemma
Species: T. alaus – T. alterum – T. benoiti – T. brevidens – T. brignolii – T. deccanense – T. extorre – T. gongshan – T. helenense – T. kepense – T. loebli – T. magister – T. manggarai – T. marawula – T. mardionoi – T. medioculatum – T. menglaense – T. menglaensis – T. mochima – T. namkhan – T. nandan – T. okei – T. phulchoki – T. rhinoceros – T. samoense – T. sokense – T. tatacoa – T. thamin – T. viduum – T. vietnamensis – T. ziyaoensis
Name

Tetrablemma Pickard-Cambridge, 1873

Type species: Tetrablemma medioculatum Octavius Pickard-Cambridge, 1873

Gender: Neuter
Synonymy

Indonops Tikader, 1976 (synonymized by Brignoli, 1976: 211)
Type species: Indonops deccanensis Tikader, 1976

References
Primary references

Pickard-Cambridge, O. 1873. On some new genera and species of Araneida. Proceedings of the Zoological Society of London 41(1): 112–129. Reference page.

Additional references

Brignoli, P.M. 1976b. On some recent papers about Indian spiders. Bulletin of the British Arachnological Society 3(8): 211-213. Reference page.
Burger, M.; Harvey, M.S.; Stevens, N. 2010: A new species of blind subterranean Tetrablemma (Araneae: Tetrablemmidae) from Australia. Journal of arachnology, 38: 146–149. DOI: 10.1636/A09-73.1
Labarque, F.M.; Grismado, C.J. 2009: Description of a new species of armored spider from Myanmar (Araneae: Tetrablemmidae). Zootaxa, 2143: 55–58. Abstract & excerpt
Lin, Y.; Li, S. 2010: New armored spiders of the family Tetrablemmidae from China. Zootaxa, 2440: 18–32. Preview
Lin, Y-C., Li, S-Q. & Jäger, P. 2018. Tetrablemmidae, a spider family newly recorded from Cambodia (Arachnida, Araneae). ZooKeys 777: 43–55. DOI: 10.3897/zookeys.777.24917 Reference page.
Martinez, L., Flórez-Daza, A.E. & Brescovit, A.D. 2020. Two new species of the armored spider genus Tetrablemma O. P.-Cambridge, 1873 from northern South America (Araneae: Synspermiata: Tetrablemmidae). Zootaxa 4743(1): 092–102. DOI: 10.11646/zootaxa.4743.1.7. Paywall. Reference page.

Tetrablemma is a widespread genus of armored spiders first described by Octavius Pickard-Cambridge in 1873.[3] It only has four eyes; an unusual trait for spiders, found only here and in some species of Caponiidae, though the two are not closely related. The eyes are large, but unequal in size, closely grouped around the center of the prosoma that rises in a somewhat of a cone shape from the abdomen. They have four closely positioned spinnerets enclosed in a corneous casing.[3]
Species

As of April 2019, the World Spider Catalog accepted the following species:[1]

Tetrablemma alaus Burger, Harvey & Stevens, 2010 – Australia (Western Australia)
Tetrablemma alterum Roewer, 1963 – Micronesia
Tetrablemma benoiti (Brignoli, 1978) – Seychelles
Tetrablemma brevidens Tong & Li, 2008 – China
Tetrablemma brignolii Lehtinen, 1981 – India
Tetrablemma deccanense (Tikader, 1976) – India
Tetrablemma extorre Shear, 1978 – Trinidad
Tetrablemma helenense Benoit, 1977 – St. Helena
Tetrablemma kepense Lin, Li & Jäger, 2018 – Cambodia
Tetrablemma loebli Bourne, 1980 – India
Tetrablemma magister Burger, 2008 – Australia (Queensland)
Tetrablemma manggarai Lehtinen, 1981 – Indonesia (Flores)
Tetrablemma marawula Lehtinen, 1981 – Indonesia (Sulawesi)
Tetrablemma mardionoi Lehtinen, 1981 – Indonesia (Sumatra)
Tetrablemma medioculatum O. Pickard-Cambridge, 1873 (type species) – 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

"Gen. Tetrablemma O. Pickard-Cambridge, 1873", World Spider Catalog, Natural History Museum Bern, retrieved 2019-04-13
Brignoli, P. M. (1976). "On some recent papers about Indian spiders". Bulletin of the British Arachnological Society. 3 (8): 211–213.
Pickard-Cambridge, O. (1873). "On some new genera and species of Araneida". Proceedings of the Zoological Society of London. 41 (1): 112–129.