Arthrosporella is a fungal genus in the family Tricholomataceae. It is a monotypic genus, containing the single species Arthrosporella ditopa, found in South America. The genus was described by mycologist Rolf Singer in 1970. In 2005, it was announced that new species had been discovered that belonged to the genus, but further study indicated that they represented separate genera not closely related to Arthrosporella (as was first thought), and they were described in 2007 as Arthromyces and Blastosporella, the former in the Tricholomataceae, the latter in the Lyophyllaceae.