Nops is a genus of medium-sized South American, Central American, and Caribbean spiders in the family Caponiidae, first described by Alexander Macleay in 1839. It has a great richness on the Caribbean islands, and most mainland species are located in high proportion toward the Caribbean coast. It likely has a neotropical distribution, though most species of South America are known only from the coast of Colombia and Venezuela, including the islands of Aruba, Curaçao, Bonaire, and Trinidad.
Monophyly Nops have subsegmented tarsi, as well as two other leg characters often found in nopine genera: a ventral translucent keel on the anterior metatarsi and a translucent membrane between the anterior metatarsi and tarsi. These spiders can be distinguished from similar genera with these modifications by their elongated unpaired claw on the anterior legs, extending dorsally between the paired claws.
Species it contains thirty-eight species plus one fossil in Dominican amber: Nops agnarssoni Sánchez-Ruiz, Brescovit & Alayón, 2015 – Puerto Rico Nops alexenriquei Sánchez-Ruiz & Brescovit, 2018 – Brazil Nops amazonas Sánchez-Ruiz & Brescovit, 2018 – Brazil Nops anisitsi Strand, 1909 – Paraguay Nops bahia Sánchez-Ruiz & Brescovit, 2018 – Brazil Nops bellulus Chamberlin, 1916 – Peru Nops blandus (Bryant, 1942) – Virgin Is. (US and UK) Nops branicki (Taczanowski, 1874) – French Guiana Nops campeche Sánchez-Ruiz & Brescovit, 2018 – Mexico, Belize, Costa Rica Nops coccineus Simon, 1892 – Saint Vincent and the Grenadines (St. Vincent) Nops enae Sánchez-Ruiz, 2004 – Cuba Nops ernestoi Sánchez-Ruiz, 2005 – Hispaniola (Dominican Rep.) Nops farhati Prosen, 1949 – Argentina Nops finisfurvus Sánchez-Ruiz, Brescovit & Alayón, 2015 – Virgin Is. (UK), Puerto Rico (Culebra Is.) Nops flutillus Chickering, 1967 – Curaçao Nops gertschi Chickering, 1967 – Hispaniola (Dominican Rep.) Nops glaucus Hasselt, 1887 – Netherlands Antilles (Bonaire) Nops guanabacoae MacLeay, 1839 (type) – Cuba, Bahamas Nops hispaniola Sánchez-Ruiz, Brescovit & Alayón, 2015 – Hispaniola (Haiti, Dominican Rep.) Nops ipojuca Sánchez-Ruiz & Brescovit, 2018 – Brazil Nops itapetinga Sánchez-Ruiz & Brescovit, 2018 – Brazil Nops jaragua Sánchez-Ruiz & Brescovit, 2018 – Dominican Rep. Nops largus Chickering, 1967 – Panama Nops maculatus Simon, 1893 – Venezuela, Trinidad, Guyana Nops mathani Simon, 1893 – Brazil Nops meridionalis Keyserling, 1891 – Brazil Nops minas Sánchez-Ruiz & Brescovit, 2018 – Brazil Nops navassa Sánchez-Ruiz & Brescovit, 2018 – Navassa Is. (Haiti or USA) Nops nitidus Simon, 1907 – Brazil Nops pallidus Sánchez-Ruiz & Brescovit, 2018 – Cuba Nops pocone Sánchez-Ruiz & Brescovit, 2018 – Brazil Nops quito Dupérré, 2014 – Ecuador Nops siboney Sánchez-Ruiz, 2004 – Cuba Nops sublaevis Simon, 1893 – Venezuela Nops tico Sánchez-Ruiz & Brescovit, 2018 – Costa Rica, Panama Nops toballus Chickering, 1967 – Jamaica Nops ursumus Chickering, 1967 – Panama Nops variabilis Keyserling, 1877 – Colombia, Venezuela
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