 1. T2 slender, 2.15 × as long as maximum width posteriorly (A); first flagellomere 7.0 × as long as wide (B), flagellum with wide pale band on flagellomeres 7–14 (B); propodeal apophyses nearly as long as hind coxal width (C); hind femur slender, 6.3 × as long as wide (CAR) …. Eusterinx dzanga
 - T2 less slender, 1.2– 1.6 × as long as maximum width posteriorly (a); first flagellomere 5.0– 5.5 × as long as wide (b), flagellum either without pale band (b), or with narrower pale band on flagellomeres 11-14 (c);propodeal apophyses shorter, at most 0.6 × hind coxal width (d); hind femur stouter, 5.0–5.7 × as long as wide … 2
2. Flagellum with pale band on flagellomeres 11–14 (A); apophyses elongate, terminally rounded, length equivalent to T1 height in lateral view (B) (Uganda) … Eusterinx kibale
 - Flagellum without pale band (a); apophyses short, terminally acute, length equal to or less than 0.7 × T1 height in lateral view (b) … 3
 3. Inner orbits strongly convergent to clypeus (A); ocellar-ocular line longer than maximum diameter of lateral ocellus – as 28 : 27 (B); area superomedia elongate, 2.4 × as long as maximum wide (C) (South Africa) ...Eusterinx africana
 - Inner orbits moderately convergent to clypeus (a); ocellar-ocular line shorter than or equal to maximum diameter of lateral ocellus (c); area superomedia 1.3 -1.6 × as long as maximum width (c) …4
 4. Area superomedia 1.6 × as long as maximum width (A); malar space short 1.2 × as long as basal mandibular width (B); hind tarsus clearly longer than hind tibia (South Africa) … Eusterinx gamka
- Area superomedia 1.3 × as long as maximum wide (a); malar space longer 1.75 × as long as basal mandibular width (b); hind tarsus as long as hind tibia (South Africa) … Eusterinx kirkwoodi |
