Ant key 21
Subfamily Myrmicinae
Genus Pheidole (minor caste)
| Small size ~2 mm in length, propodeal spines 2 to 3 times diameter of propodeal spiracal (Fig. a). | 22 |
| Larger, >2.5 mm in length, propodeal spines similar in length to diameter of spiracle (Fig. b). | 23 |
