Heisonyx Marshall, 1947
Heisonyx Marshall, 1947: 206 (original description).
Heisonyx: Alonso-Zarazaga & Lyal 1999: 171 (catalogue); Borovec et al. 2009: 842 (revision); Borovec & Oberprieler 2013: 367 (note).
Type species: Heisonyx vitticollis Marshall, 1947 .
Number of species: 7 described species (Borovec et al. 2009), the authors are aware of 2 undescribed species in museum collections.
Distribution: South Africa (Western Cape, Eastern Cape).