Key to Vietnamese Amblyoponinae Genera

Key to Vietnamese genera of the subfamily Amblyoponinae based on workers. Modified from Eguchi et al. (2014) by Eguchi et al. (2015).

1

 * Petiole narrowly attached to abdominal segment III (gastral segment I); abdominal segment III above helcium with free anterior face (Fig. 9); frontal lobe completely absent, thus antennal socket in full-face view fully exposed (Fig. 10) => Opamyrma (this genus is now in the subfamily Leptanillinae)
 * Petiole broadly attached to abdominal segment III; abdominal segment III above helcium without a conspicuous free anterior face (Fig. 11); frontal lobe present, thus antennal socket in full-face view at least partly concealed (Fig. 12) => 2

2

 * Mandible elongate-triangular, armed with 3 teeth (Fig. 13); in closed position inner margin of mandibles not forming a conspicuous gap against the anterior clypeal margin => Prionopelta
 * Mandible linear, armed with more than 3 teeth (Figs. 14, 15, 16); in closed position inner margin of mandibles separated from anterior clypeal margin by a large gap => 3

3

 * Apex of mandible round, with minute teeth (Fig. 16); body covered with spatulate setae (Fig. 17) => Mystrium
 * Apex of mandible with distinct apical tooth/teeth (Figs. 14, 15); body without spatulate setae (Fig. 18) => 4

4

 * A few apical segments of antenna distinctly flattened (Figs. 19, 20) => Myopopone
 * All of antennal segments terete, not flattened (Figs. 21, 22) => 5

5

 * Middle to basal part of inner margin of mandible with triangular teeth arranged in two rows, or with more or less bifid teeth arranged in a single row => Stigmatomma
 * Middle to basal part of inner margin of mandible with 2–5 blunt or truncate teeth arranged in a single row => Bannapone