1	Compound eyes moderate in size: OI < 30. Head square CI > 8	Temnothorax solidinodus sp. n.
–	Compound eyes large: OI > 30. Head elongate CI < 85	2
2	In full-face view antennal scapes short, distinctly failing to reach posterior margin of head (Fig. 2a); SI < 80. In dorsal view postpetiole trapezoidal, widest at the anterior 1/4 of the segment (Fig. 2c)	3
–	In full face view antennal scapes long, surpassing posterior margin of head by at least the length of the first funicular segment (Fig. 2b); SI > 80. In dorsal view, postpetiole widest at the anterior 1/3 of the segment (Fig. 2d)	4
3	Metanotal groove present (Fig. 3a); posterior margin of head shallowly but distinctly impressed (Fig. 3c)	Temnothorax megalops (Hamman & Klemm)
–	Metanotal groove absent (Fig. 3b), barely visible as an indistinct break in the sculpture dorsally in some specimens; posterior margin of head flat (Fig. 3d)	Temnothorax mpala sp. n.
4	Propodeal spines short: PSLI < 23 (Fig. 4a)	Temnothorax brevidentis sp. n.
–	Propodeal spines moderately long and acute: PSLI > 23 (Fig. 4b)	4
5	Antennal scapes long; surpassing the posterior margin of the head by the length of the first two funicular segments when fully retracted: SI 94–97 (Fig. 4c)	Temnothorax rufus sp. n.
–	Antennal scapes shorter; surpassing the posterior margin of the head by the length of the first funicular segment when fully retracted: SI 84 (Fig. 4d)	Temnothorax cenatus (Bolton)