Pheidole singaporensis conicollis (Emery, 1900)

Material examined. None available.

Material not physically examined. Unknown.

Literature. Viehmeyer (1916), Overbeck (1924) [both as Pheidole (Ischnomyrmex) longipes var. conicicollis (sic)].

Localities. Bukit Timah Hill

Habitat/Ecology. This subspecies was found in either primary or old secondary forest, in a rotten, half-decayed tree branch on the ground.

Remarks. The subspecies conicollis may be distinguished from P. singaporensis by a slightly wider head, and relatively shorter/less elongate occipital collar or ‘neck’; other more subtle differences include relatively shorter propodeal spines and a weakly pointed petiolar apex (as opposed to an almost flat apicodorsal petiolar face in P. singaporensis) At the time of writing, this subspecies is known from Singapore only based on literature records.