Key to the Pheidole crassicornis species group

5 Major: in full-face view, profile of occipital lobes subangulate, coming together at midline of head in a deep cleft that is also subangulate (Texas)............................................................ Pheidole bureni Wilson 2003

- Major: in full-face view, occipital lobes broadly rounded, coming together at midline of head in a rounded median cleft... 5a

5a Major: in side view, anapleural sulcus present, strongly printed; promesonotal profile in dorsal oblique view with three convexities (Fig. 11A)......................................................... Pheidole jolalpanensis sp. nov.

- Major: in side view, anapleural sulcus absent or lightly printed; promesonotal profile in dorsal oblique view with 2 convexities (Fig. 11B)................................................................ Pheidole crassicornis Emery 1895