The Tetrablemmidae are a spider family with 126 described species in 29 genera that occur throughout the world tropics. They are sometimes called armored spiders.

The family Pacullidae, with the only genus Paculla, has been incorporated into this family in 1981.

Most tetrablemmids have been collected from litter and soil, including soil in epiphytes; some live in caves. Some cave species, but also some soil inhabitants, show typical adaptations of cave spiders, such as loss of eyes and weak sclerotization.

Spiders in the genus Paculla are four to five times larger than other tetrablemmids. The genus Tetrablemma features only four eyes, a trait only shared with most species of the not closely related Caponiidae.

Tetrablemmids do not seem to build webs.

Distribution

Most genera occur in Southeast Asia, only a few in Africa and Central and South America.

Genera

As of October 2015, the World Spider Catalog accepted the following genera:

Ablemma Roewer, 1963 (Southeast Asia)
Afroblemma Lehtinen, 1981 (Africa)
Anansia Lehtinen, 1981 (Africa)
Bacillemma Deeleman-Reinhold, 1993 (Thailand)
Borneomma Deeleman-Reinhold, 1980 (Borneo)
Brignoliella Shear, 1978 (Southeast Asia)
Caraimatta Lehtinen, 1981 (Central America)
Choiroblemma Bourne, 1980 (India)
Cuangoblemma Brignoli, 1974 (Angola)
Fallablemma Shear, 1978 (Samoa, Sulawesi)
Gunasekara Lehtinen, 1981 (Sri Lanka)
Hexablemma Berland, 1920 (Kenya)
Indicoblemma Bourne, 1980 (Thailand, India)
Lamania Lehtinen, 1981 (Southeast Asia)
Lehtinenia Tong & Li, 2008
Maijana Lehtinen, 1981 (Java)
Mariblemma Lehtinen, 1981 (Seychelles)
Matta Crosby, 1934 (Brazil, Mexico)
Micromatta Lehtinen, 1981 (Belize)
Monoblemma Gertsch, 1941 (Brazil, Colombia, Panama)
Paculla Simon, 1887 (Southeast Asia)
Pahanga Shear, 1979 (Southeast Asia)
Perania Thorell, 1890 (Southeast Asia)
Rhinoblemma Lehtinen, 1981 (Caroline Island)
Sabahya Deeleman-Reinhold, 1980 (Borneo)
Shearella Lehtinen, 1981 (Madagascar, Sri Lanka)
Sinamma Lin & Li, 2014
Singalangia Lehtinen, 1981 (Sumatra)
Singaporemma Shear, 1978 (Vietnam, Singapore)
Sulaimania Lehtinen, 1981 (Malaysia)
Tetrablemma O. P-Cambridge, 1873 (Southeast Asia, Africa, Micronesia)

source - Wikipedia
if u like the post please like and shear

Because the study material is quite expensive, not all can buy it. The RBbox does the same small cache of the same information and study material to reach you for free. You also help in making this case successful by cooperating. You also have some information that you can send to others as a post or article. We will publish it with your name and picture. www.rbbox.in