Key of Formicinae

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Lasius

Prenolepis

In full-face view the posterior margin of the head straight or only slightly concave (Fig. 3.9a); mandibles each with 7 or more teeth (Fig. 3.9c) In full-face view the posterior margin of head rounded (at least in Japanese species) (Fig. 3.9b); mandibles each with 6 teeth (Fig. 3.9d)
Lasius Prenolepis

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