Key to Aenictus currax group species

The following worker key is based on Jaitrong, W. & Yamane, S. 2011. Synopsis of Aenictus species groups and revision of the A. currax and A. laeviceps groups in the eastern Oriental, Indo-Australian, and Australasian regions (Hymenoptera: Formicidae: Aenictinae). Zootaxa, 3128, 1–46. [[Media:Jaitrong_&_Yamane_2011.pdf|PDF]]

1

 * Southeast Asian species . . . . . 2


 * New Guinean or Australian species . . . . . 7

2
return to couplet #1
 * Pronotum anteriorly produced into a pair of horn-like protuberances (Malay Peninsula, Borneo, Sumatra) . . . . . Aenictus cornutus


 * Pronotum unarmed . . . . . 3

3
return to couplet #2
 * Head and promesonotum without standing hairs (Borneo) . . . . . Aenictus glabrinotum


 * Head and promesonotum with standing hairs . . . . . 4

4
return to couplet #3
 * Declivity of propodeum feebly convex, not encircled with a thin rim (Vietnam, Laos, Thailand) . . . . . Aenictus parahuonicus


 * Declivity of propodeum shallowly concave, and encircled with a thin rim . . . . . 5

5
return to couplet #4
 * Entire propodeum and petiole with dense micropunctures (Thailand, Malay Peninsula, Borneo, Philippines) . . . . . Aenictus gracilis


 * Propodeal and petiolar dorsum smooth and shiny . . . . . 6

6
return to couplet #5
 * Head with 2 long standing hairs on vertex; pronotal hairs relatively short (0.23–0.25 mm); antenna relatively short (SI 75–85) (Borneo) . . . . . Aenictus pfeifferi


 * Head with some shorter standing hairs in addition to two long hairs on vertex; pronotal hairs relatively long (0.38–0.40 mm); antenna relatively long (SI 97–100) (Sulawesi) . . . . . Aenictus wayani

7
return to couplet #1
 * Propodeum and petiole entirely sculptured (Australia) . . . . . Aenictus diclops


 * Propodeal and petiolar dorsa smooth and shiny (New Guinea) . . . . . 8

8
return to couplet #7
 * Concolorous dark reddish brown; antennal scape shorter than head width (SI 87–94) . . . . . Aenictus huonicus


 * Concolorous brownish yellow except for dark brown vertex; antennal scape as long as or slightly longer than head width (SI 100-104) . . . . . Aenictus currax