Key to the Leptogenys of New Caledonia

This worker key is based on: Ramage, T., Jouault, C., Schmidt, A.R., Seyfullah, L.J. & Perrichot, V. 2019. Two new ant species (Formicidae: Dorylinae, Ponerinae) from New Caledonia. European Journal of Taxonomy 589: 1–14 (doi:10.5852/ejt.2019.589), as modified from Wilson, 1958.

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• Leptogenys
• New Caledonia

1

• Large species (HW > 1.2 mm) . . . . . 2

• Small species (HW ≤ 1.2 mm) . . . . . 3

2

• Mandibles exceptionally long, their length measured from insertion to tip exceeding the head width (Fig. 2A) . . . . . Leptogenys rouxi

Ramage et al. 2019. Figure 2. Leptogenys of New Caledonia

• Mandibles shorter, their length much less than the head width (Fig. 1B) . . . . . Leptogenys loarelae

3

• Head entirely covered by coarse punctures (Fig. 2C) . . . . . Leptogenys punctata

• Head entirely smooth and shining (Fig. 2B) . . . . . 4

4

• Larger species, head width ≥ 0.9 mm; in dorsal view, posterior corners of petiolar node forming distinct angles of 45–50° (Fig. 3A) . . . . . Leptogenys acutangula

• Smaller species, head width not exceeding 0.75 mm; in dorsal view, posterior corners of petiolar node thick and broadly rounded (Fig. 3B) . . . . . Leptogenys sagaris