Amphidraus is a genus of South American jumping spiders first described by Eugène Simon in 1900. It was previously considered a synonym of Nebridia, but this was later rejected by Jerzy Prószyński, who claimed that merging the two genera was not supported by previous diagnostic drawings.
Members of this genus most closely resemble those of Marma and the monotypic genus Yacuitella. All three genera have a projection on the embolic disc that is independent from the embolus and a conductor on the distal retro-ventral region of the cymbium, though it is membranous in Amphidraus and Yacuitella and sclerotized in Marma. Spiders of Amphidraus can be distinguished from these other two by the presence of both a proximal tegular lobe and a cylindrical embolic filament that emerges from the distal region of the embolus shaft.
Species , the World Spider Catalog accepted the following species: Amphidraus araripe Salgado & Ruiz, 2019 – Brazil Amphidraus argentinensis Galiano, 1997 – Argentina Amphidraus auriga Simon, 1900 – Bolivia Amphidraus belzonte Salgado & Ruiz, 2017 – Brazil Amphidraus bifidus Salgado & Ruiz, 2017 – Brazil Amphidraus boxhica Galvis, 2017 – Colombia Amphidraus boomerang Salgado & Ruiz, 2019 – Brazil Amphidraus caziuanan Salgado & Ruiz, 2017 – Brazil Amphidraus chie Galvis, 2017 – Colombia Amphidraus colombianus Galvis, 2017 – Colombia Amphidraus complexus Zhang & Maddison, 2012 – Ecuador Amphidraus cornipalpis Salgado & Ruiz, 2019 – Brazil Amphidraus draconicaudatus Salgado & Ruiz, 2017 – Brazil Amphidraus draconitupan Salgado & Ruiz, 2019 – Brazil Amphidraus duckei Galiano, 1967 – Brazil Amphidraus guaitipan Galvis, 2017 – Colombia Amphidraus guatavita Galvis, 2017 – Colombia Amphidraus janauari Salgado & Ruiz, 2017 – Brazil Amphidraus loxodontillus Salgado & Ruiz, 2017 – Brazil Amphidraus mae Galvis, 2017 – Colombia Amphidraus manauara Salgado & Ruiz, 2019 – Brazil Amphidraus mysticetus Salgado & Ruiz, 2017 – Brazil Amphidraus nigrigenu Salgado & Ruiz, 2017 – Brazil Amphidraus pae Galvis, 2017 – Colombia Amphidraus pulvinus Salgado & Ruiz, 2017 – Brazil Amphidraus quimbaya Galvis, 2017 – Colombia Amphidraus quinini Galvis, 2017 – Colombia Amphidraus sacrificatus Salgado & Ruiz, 2019 – Brazil Amphidraus santanae Galiano, 1967 – Brazil Amphidraus shenlong Salgado & Ruiz, 2019 – Brazil Amphidraus sie Galvis, 2017 – Colombia Amphidraus sikuani Galvis, 2017 – Colombia Amphidraus simplex Salgado & Ruiz, 2017 – Brazil Amphidraus somondoco Galvis, 2017 – Colombia Amphidraus sotairensis Galvis, 2017 – Colombia Amphidraus sua Galvis, 2017 – Colombia Amphidraus tanimuca Galvis, 2017 – Colombia Amphidraus tisquesusa Galvis, 2017 – Colombia Amphidraus tundama Galvis, 2017 – Colombia Amphidraus zaque Galvis, 2017 – Colombia Amphidraus zipa Galvis, 2017 – Colombia
References
External links Photographs of A. duckei and several other Amphidraus species from Brazil