1	Propodeal spine very short (Fig. 15). Spine length vs. absolute cephalic size (SPST/CS): ≤ 0.330 (min. 0.258, max. 0.330)	spinosus sp. n.
–	Propodeal spine longer (Figs 16–18). Spine length vs. absolute cephalic size (SPST/CS): > 0.330 (min. 0.333, max. 0.437)	2
2	Bases of anterodorsal petiolar spines enclose a triangular truncate area on the dorsum of petiolar node delineated by a rim (Fig. 16). In dorsal view, anterodorsal petiolar spines distantly surpassing lateral margin of petiole (Fig. 16). Apical distance of the anterodorsal spines on the petiolar node vs. petiole width (NSTI/PEW): > 1.550 (min. 1.531, max. 1.948), [5–95% percentiles: min. 1.563, max. 1.873]	hafahafa sp. n.
–	There is no conspicuous truncate area on the dorsum of petiolar node (Figs 17–18). Apical distance of the anterodorsal spines on the petiolar node vs. petiole width (NSTI/PEW): < 1.550 (min. 0.795, max. 1.575), [5–95% percentiles: min. 0.823, max. 1.549]	3
3	In dorsal view, distance between tips of anterodorsal petiolar spines longer than petiole width, spines surpassing lateral margins of petiole (Fig. 17). Apical distance of the anterodorsal spines on the petiolar node vs. petiole width (NSTI/PEW): > 1.090 (min. 1.055, max. 1.575), [5–95% percentiles: min. 1.094, max. 1.549]. Pronotal spines wider; apical distance of pronotal spines vs. absolute cephalic size (PSTI/CS): > 0.700 (min. 0.711, max. 0.813)	medusus sp. n.
–	In dorsal view, distance between tips of anterodorsal petiolar spines shorter than petiole width (Fig. 18). Apical distance of the anterodorsal spines on the petiolar node vs. petiole width (NSTI/PEW): > 1.090 (min. 0.795, max. 1.220), [5–95% percentiles: min. 0.823, max. 1.083]. Apical distance of pronotal spines vs. absolute cephalic size (PSTI/CS): < 0.700 (min. 0.617, max. 0.690)	capricornis sp. n.