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. PDF

You might be interested in:

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

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