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.

You might be interested in

• Aenictus species groups (diagnoses)
• Key to Aenictus species groups
• The Aenictus genus page.

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