Probolomyrmex Mayr 1901

Worker-based key to the Indian species Probolomyrmex Mayr, 1901 (based on Brown 1975) 1. Slightly larger species with total length 2.70 mm; CI 66; petiole wider than the other species with width 0.23 mm; petiole with subrectangular subpetiolar process -------------------------------- P. bidens – Slightly smaller species with total length 2.40 mm; CI 65; petiole narrower and longer than the other species with width 0.21 mm; petiole with narrow subpetiolar process -------------------------- P. procne