1a. Mandibles with large and small teeth; clypeus toothed
Amblypone pallipes
1b. Clypeus not toothed 2
2a. Petiolar scale without a translucent window
Hypoponera punctatissima
2b. Petiolar scale with a translucent window or cavity Ponera pennsylvanica
Reference: Francouer, A. 1979. Les fourmis du Québec. 1. Introduction; 2. La famille des Formicidae; 3. La sous-famille des Ponerinae. Annales de la Société Entomolologique du Québec 24: 12-47.
Ponera pennsylvanica

