Formicidae: key to subfamilies, couplet 2

Formicidae: key to subfamilies, couplet 2
Key: modified from Creighton (1950), Wheeler & Wheeler (1963), Hölldobler & Wilson (1990), Bolton (1994)

Taxa remaining

Dolichoderinae
Ecitoniae*
Formicinae
Ponerinae

Figure 6. Ponerinae: Ponera pennsylvanica

Figure 7. Formicinae: Camponotus noveboracensis

Figure 8. Dolichoderinae: Tapinoma sessile

2.Gaster with a distinct constriction between the first and second segments. Sting present and usually conspicuous (Fig. 6: 1b 2a). (collected in all Midwestern states)
...Ponerinae

Gaster without constriction, sting extremely reduced / absent and never visible without dissection (Figs. 7-8).
...3.

Ponerinae: Ponera sp.

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2.Gaster with a distinct constriction between the first and second segments. Sting present and usually conspicuous (Fig. 6: 1b 2a). (collected in all Midwestern states)	...Ponerinae
Gaster without constriction, sting extremely reduced / absent and never visible without dissection (Figs. 7-8).	...3.