Formicinae: key to genera, couplet 3

Formicinae: key to genera couplet 3
Key: modified from Wheeler & Wheeler (1963), Hölldobler & Wilson (1990), Bolton (1994)

Taxa remaining

Acanthomyops
Formica
Lasius
Myrmecocystus*
Paratrechina
Polyergus
Prenolepis

Figure 33. Formicinae: Polyergus breviceps

Figure 34. Formicinae: Lasius neoniger

3. Mandibles sickle-shapped and edentate (Fig. 19: 1b 2b 3a) ; palp formula 4,2. (obligate slave makers, found in mixed colonies with Formica spp. slaves, collected in all Midwestern states)(none in TW)
..Polyergus

Mandibles more or less triangular and usually armed with 5-12 sharp teeth of varying size (Fig. 20); palp formula usually 6,4 or 3,3, but never 4,2.
...4.

Subfamily: Genus: P. breviceps Emery = P. rusfescus

Formicinae Polyergus P. lucidus Mayr MN, beautiful

Notes: obligate slavemaker, treat raids with great care, sickle mandible, more effieient than Raptiformica

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3. Mandibles sickle-shapped and edentate (Fig. 19: 1b 2b 3a) ; palp formula 4,2. (obligate slave makers, found in mixed colonies with Formica spp. slaves, collected in all Midwestern states)(none in TW)	..Polyergus
Mandibles more or less triangular and usually armed with 5-12 sharp teeth of varying size (Fig. 20); palp formula usually 6,4 or 3,3, but never 4,2.	...4.

Subfamily:	Genus:	P. breviceps Emery = P. rusfescus
Formicinae	Polyergus	P. lucidus Mayr	MN, beautiful