Key to Aenictus javanus group species

The following worker key is based on Jaitrong, W. & Yamane, S. (2012) Review of the Southeast Asian species of the Aenictus javanus and Aenictus philippinensis species groups (Hymenoptera, Formicidae, Aenictinae). ZooKeys 193: 49–78, doi: 10.3897/zookeys.193.2768.

1

 * Basal margin of mandible with a distinct denticle behind large basal tooth; smaller species (HW 0.25–0.38 mm) (E. Thailand) . . . . . Aenictus duengkaei


 * Basal margin of mandible lacking denticle larger species (HW 0.40–0.65 mm) . . . . . 2

2
return to couplet #1
 * Declivity of propodeum almost flat, with blunt lateral carinae, but not demarcated basally by a transverse carina (Philippines) . . . . . Aenictus piercei


 * Declivity of propodeum shallowly concave, and margined with a thin carina both laterally and basally #|. . . . . 3

3
return to couplet #2
 * With head seen in profile occipital corner bluntly angulated (almost rightangled) (Java and Borneo) . . . . . Aenictus javanus


 * With head seen in profile occipital corner rounded . . . . . 4

4
return to couplet #3
 * Petiole distinctly longer than high; postpetiole almost as long as petiole (S. Thailand) . . . . . Aenictus longinodus


 * Petiole almost as long as high; postpetiole slightly larger than petiole . . . . . 5

5

 * Lateral face of pronotum shiny but with reticulation (Vietnam, Laos, and Thailand) . . . . . Aenictus doydeei


 * Lateral face of pronotum smooth and shiny; sculpture if any very superficial (Vietnam, Laos, and Thailand) . . . . . Aenictus nishimurai