Chrosiothes is a spider genus that occurs almost exclusively in the New World from the USA to Brazil

Brazil

Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

, with one species found in China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, Korea

Korea

Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

 and Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

, and two species endemic to Taiwan

Taiwan

Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

.

They have two minute setae in place of a colulus, and thick legs. The males are noticeably smaller than the females: for example in C. jamaicensis the female is 2.9mm long, the male only 1.6mm.

The genera Episinus

Episinus

Episinus is a spider genus of the family Theridiidae.These spiders reach about 5mm in size. They occur almost worldwide.-Species:* Episinus affinis Bösenberg & Strand, 1906...

, Spintharus

Spintharus

The spider genus Spintharus occurs from the northeastern USA to Brazil, with one species found in Pakistan.It is very similar to the genus Thwaitesia, and both are similar to Episinus. Unlike Argyrodes, they have two setae in place of a colulus.Specimens of S. flavidus are variable in structure...

, Thwaitesia

Thwaitesia

Thwaitesia is a genus of spider that occurs worldwide in the tropics.It is very similar to the genus Spintharus, and both are similar to Episinus....

and Anelosimus

Anelosimus

Anelosimus is a genus of tangle web spider described by Eugène Simon, in 1891, from Venezuela. It includes the South American social spider Anelosimus eximius and related species....

are closely related.

Species

• Chrosiothes chirica (Levi, 1954) (USA, Mexico)
• Chrosiothes episinoides (Levi, 1963) (Chile)
• Chrosiothes fulvus Yoshida, Tso & Severinghaus, 2000 (Taiwan)
• Chrosiothes goodnightorum (Levi, 1954) (Mexico to Costa Rica)
• Chrosiothes iviei Levi, 1964 (USA)
• Chrosiothes jamaicensis Levi, 1964 (Jamaica, Dominica)
• Chrosiothes jenningsi Piel, 1995 (USA)
• Chrosiothes jocosus (Gertsch & Davis, 1936) (USA, Mexico)
• Chrosiothes litus Levi, 1964 (Mexico)
• Chrosiothes minusculus (Gertsch, 1936) (USA, Mexico)
• Chrosiothes niteroi Levi, 1964 (Bolivia, Brazil)
• Chrosiothes perfidus Marques & Buckup, 1997 (Brazil)
• Chrosiothes portalensis Levi, 1964 (USA, Mexico)
• Chrosiothes proximus (O. P.-Cambridge, 1899) (Mexico to Panama)
• Chrosiothes silvaticus Simon, 1894 (USA to Ecuador)
• Chrosiothes sudabides (Bösenberg & Strand, 1906) (China, Korea, Japan)
• Chrosiothes taiwan Yoshida, Tso & Severinghaus, 2000 (Taiwan)
• Chrosiothes tonala (Levi, 1954) (Mexico to Honduras)
• Chrosiothes valmonti (Simon, 1897) (St. Vincent)
• Chrosiothes venturosus Marques & Buckup, 1997 (Brazil)
• Chrosiothes wagneri (Levi, 1954) (Mexico)