Amphidraus

{{Short description|Genus of spiders}}

{{Automatic taxobox

| image =

| image_caption =

| taxon = Amphidraus

| authority = Simon, 1900

| type_species = Amphidraus auriga

| type_species_authority = Simon, 1900

| subdivision = See text.

| subdivision_ranks = Species

| range_map =

}}

Amphidraus is a genus of South American jumping spiders first described by Eugène Simon in 1900.{{cite journal| last=Simon| first=E.| year=1900| title=Etudes arachnologiques. 30e Mémoire. XLVII. Descriptions d'espèces nouvelles de la famille des Attidae| journal=Annales de la Société Entomologique de France| volume=69| pages=27–61| doi=10.1080/21686351.1900.12280033}} It was previously considered a synonym of Nebridia,{{cite journal| last1=Zhang| first1=J. X.| last2=Maddison| first2=W. P.| year=2015| title=Genera of euophryine jumping spiders (Araneae: Salticidae), with a combined molecular-morphological phylogeny| journal=Zootaxa| volume=3938| issue=1| pages=1–147| doi=10.11646/zootaxa.3938.1.1| pmid=25947489}} but this was later rejected by Jerzy Prószyński, who claimed that merging the two genera was not supported by previous diagnostic drawings.{{cite journal| last=Prószyński| first=J.| year=2017| title=Pragmatic classification of the world's Salticidae (Araneae)| journal=Ecologica Montenegrina| volume=12| pages=73| doi=10.37828/em.2017.12.1| doi-access=free}}

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.{{cite journal| last1=Salgado| first1=A.| last2=Ruiz| first2=G. R. S.| year=2019| title=Seven new species of Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini)| journal=Zootaxa| volume=4563| issue=3| pages=451–481| doi=10.11646/zootaxa.4563.3.3| pmid=31716529| s2cid=91853537}}