A male of Wernerius mumai (Sissom, 1993) is described for the first time, collected at the type locality (Gold Road, Black Mountains, Mohave County, Arizona). Originally placed in the genus Vaejovis, this species later was transferred by Soleglad & Fet (2008) to the genus Wernerius. It is one of the smallest vaejovid species known. The pedipalp fixed finger usually has 6 ID denticles and the movable finger has 7. The most unique characteristic of this species is the long, pointed, subaculear tubercle.
Ayrey, R. F., & Myers, B. T. 2020 . Description of the male of Wernerius mumai (Sissom, 1993) from western Arizona, with data on reproduction (Scorpiones: Vaejovidae). Euscorpius, No. 317: 1-11.