Ponerinae: key to genera, couplet 2

Ponerinae: key to genera couplet 2
Key: modified from Wheeler & Wheeler (1986), Hölldobler & Wilson (1990), Bolton (1994)

Taxa remaining

Hypoponera*
Ponera
Proceratium*
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Figures . Ponerinae: Ponera pennsylvanicus

2.With head in full-face view, horizontal frontal lobes absent, frontal lobes vertical, elevated, and striplike; antennal sockets exposed; promesonotal suture absent.
(collected in Iowa, Illinois, Indiana, Kansas, Michigan).
...Proceratium*

With head in full-face view, horizontal lobes present; frontal lobes cover and conceal the antennal sockets; promesonotal suture present and distinct.
...3.

Genus Proceratium Roger ™¯ itoi (Forel, 1918): Chou & Terayama, 1991: 77; - Bolton, 1995: 366. •ÏVViwVD
japonicum Santschi, 1937: Onoyama, 1991: 696; - Bolton, 1995: 366. O¥µ‹iwVD

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2.With head in full-face view, horizontal frontal lobes absent, frontal lobes vertical, elevated, and striplike; antennal sockets exposed; promesonotal suture absent. (collected in Iowa, Illinois, Indiana, Kansas, Michigan).	...Proceratium*
With head in full-face view, horizontal lobes present; frontal lobes cover and conceal the antennal sockets; promesonotal suture present and distinct.	...3.