Myrmicinae: key to genera, couplet 15

Myrmicinae: key to genera couplet 15
Key: modified from Wheeler & Wheeler (1963), Hölldobler & Wilson (1990), Bolton (1994)

Taxa remaining

Aphaenogaster
Leptothorax
Messor*#
Pheidole
Stenamma

Figure 95. Myrmicinae: Stenamma diecki

Figure 96. Myrmicinae: Apahenogaster fulva gp. sp.

15.Median portion of clypeus abruptly raised and relatively narrow, the raised portion with a pair of fine longitudinal carniae which diverge anteriorly (Fig. 95); Antenna with a 4 segmented club (not always very distinct) (Fig. 95: 2b 5a 6b 8b 13a 12b 11b 10b) (collected in all Midwestern states)(none in TW)
...Stenamma

Median portion of clypeus broad, not abruptly raised, without a pair of fine longitudinal carinae (sometimes with a single median logitudinal carina) (Fig 96); Antenna with a 3 segmented club or without a distinct club.
...16

Subfamily: Genus: S. brevicorne (Mayr)

Myrmicinae Stenamma S. diecki Emery

S. impar Forel

S. meridionale Smith, M.R.

S. schmitti Wheeler, W.M.

Notes: carnivorous, under leaf mound, rock…timid, dorsal spines

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15.Median portion of clypeus abruptly raised and relatively narrow, the raised portion with a pair of fine longitudinal carniae which diverge anteriorly (Fig. 95); Antenna with a 4 segmented club (not always very distinct) (Fig. 95: 2b 5a 6b 8b 13a 12b 11b 10b) (collected in all Midwestern states)(none in TW)	...Stenamma
Median portion of clypeus broad, not abruptly raised, without a pair of fine longitudinal carinae (sometimes with a single median logitudinal carina) (Fig 96); Antenna with a 3 segmented club or without a distinct club.	...16

Subfamily:	Genus:	S. brevicorne (Mayr)
Myrmicinae	Stenamma	S. diecki Emery
		S. impar Forel
		S. meridionale Smith, M.R.
		S. schmitti Wheeler, W.M.