A new scorpion species, Serradigitus miscionei, is described, placed in the genus Serradigitus Stahnke, 1974. These are small reddish-brown scorpions found on vertical surfaces, in the San Pedro River system and other river systems in southern, Arizona.
Ayrey, R. F. 2011 . Serradigitus miscionei (Scorpiones: Vaejovidae), a new species from southern Arizona. Euscorpius, No. 111: 1-13.