Key to Aenictus wroughtonii group species

The following worker key is based on Jaitrong, W., Yamane, S. & Wiwatwitaya, D. 2010. The Army Ant Aenictus wroughtonii and related species in the Oriental region, with descriptions of two new species. Japanese Journal of Systematic Entomology 16: 33-36. [[Media:Jaitrong W Yamane Wiwatwitaya 2010.pdf|PDF]]

Aenictus wroughtonii group species and diagnosis.

1

 * Propodeal junction rounded . . . . . 2


 * Propodeal junction angulate . . . . . 4

2
return to couplet #1
 * Subpetiolar process almost absent, anteroventrally not angulate . . . . . Aenictus wroughtonii


 * Subpetiolar process weakly developed; its anteroventral corner angulate . . . . . 3

3
return to couplet #2
 * Scape short; SI 100 or less; body hairy; the longest pronotal hair 0.23-0.25 mm; subpetiolar process very low, with ventral outline almost straight . . . . . Aenictus sagei


 * Scape long; SI 130-140; body with sparse hairs; the longest pronotal hair approximately 0.15-0.18 mm; subpetiolar process with ventral outline slightly convex . . . . . Aenictus artipus

4
return to couplet #1
 * Ventral outline of subpetiolar process convex, anteroventrally not angulate . . . . . 5


 * Ventral outline of subpetiolar process convex or almost straight; its anteroventral corner angulate . . . . . 6

5
return to couplet #4
 * Declivity of propodeum narrower, seen from back strongly tapering above; petiole slightly longer than high; body smaller with TL 2.6-2.7 mm; antenna longer with SI 122-135 . . . . . Aenictus camposi


 * Declivity of propodeum broader, and more rounded above; petiole as long as high; body larger with TL 3.1-3.2 mm; antenna shorter with SI 114-118 . . . . . Aenictus biroi

6
return to couplet #4


 * Ventral outline of subpetiolar process strongly convex in anterior half; mesonotum partly and propodeum almost entirely densely sculptured; pronotum clearly demarcated from mesonotum by a shallow transverse groove . . . . . Aenictus vieti


 * Ventral outline of subpetiolar process almost straight; entire mesonotum and propodeum smooth and shiny, at most with superficial sculpture; pronotum only weakly demarcated from mesonotum . . . . . Aenictus stenocephalus