B. joycei (Soto-Adames & Giordano, 2011)
β Subisotoma joycei Soto-Adames & Giordano, 2011: 25
QC Therrien et al. 1999, 1999a as ewingi; Soto-Adames et al. 2013
Remarks: According to descriptions, B. joycei is very similar to B. ewingi, and as stressed by Soto-Adames et al. (2013, p. 12), βit is possible that James species [ ewingi] is a senior synonym of B. joycei β.
General distribution: Nearctic.
Unplaceable records of Ballistura sp.:
QC Marshall 1964 (two species)