Key to genera of Malagasy Solenopsidini (males)

Key to genera of the tribe Solenopsidini (subfamily Myrmicinae) in the Malagasy region based on males (from Ramamonjisoa et al., 2023).

1

 * Antennae 12-segmented Solenopsis
 * Antennae 13-segmented

2

 * In full-face view, pedicel subglobular; posteromedian margin of clypeus effaced so that clypeus and frons form a continuous surface (Fig. 9A); mandible triangular with distinct basal angle, masticatory margin with exactly 4 teeth Erromyrma
 * In full-face view, pedicel not globular, more cylindrical; posteromedian margin of clypeus visible (Fig. 9B); mandible spatulate to triangular, but its basal angle always indistinct, masticatory margin with 1 to 4 teeth

3

 * Forewing with five closed cells, 1m–cu cross-vein present (Fig. 10A). In profile, petiolar peduncle longer than postpetiolar length (Fig. 10C) Syllophopsis
 * Forewing with four closed cells, 1m–cu cross-vein absent (Fig. 10B). In profile, petiolar peduncle absent or shorter than postpetiolar length (Fig. 10D)

4

 * With the head in full-face view, antennal scape short, barely reaching the posterior ocular margin; mandible long, curved, masticatory margin with 3 to 4 teeth (Fig. 11A) Monomorium
 * With the head in full-face view, antennal scape long reaching the occipital margin; mandible short, spatulate, basal margin linear, unidentate (Fig. 11B) Adelomyrmex (Seychelles)