Key to Afrotropical Zasphinctus workers

Key based on Hita et al (2017)

1

 * With head in full-face view median clypeal area with conspicuous tooth(Fig. 4E, H) and torulo-posttorular complex comparatively long (Fig. 4H);in posterodorsal view vertexal margin and posterior face of head weakly developed (Fig. 4N) ..... Zasphinctus sarowiwai
 * With head in full-face view median clypeal area without any tooth (Fig. 4D, 4F, G, I) and torulo-posttorular complex comparatively short (Fig. 4G, I); in posterodorsal view vertexal margin and posterior face of head strongly developed (Fig. 4M, O).....2

2

 * With head in full-face view parafrontal ridges with irregularly shaped dorsal outline (Fig. 4G); petiolar tergum in profile relatively lower, ca. 1.2 times longer than high (LPI 117–123) (Fig. 5M)..... Zasphinctus obamai
 * With head in full-face view parafrontal ridges with regularly shaped dorsal outline (Fig. 4I); petiolar tergum in profile relatively higher, ca. 1.1 times longer than high (LPI 112) (Fig. 5O) ..... Zasphinctus wilsoni