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Stenamma
Stenamma
| 1a. | Eyes very small | 2 |
| 1b. | Eyes larger | 3 |
| 2a. | Tiny eyes with 5-6 omatidia; pronotum and head heavily scultpured; weakly shining; reddish-yellowish brown | S. schmittii |
| 2b. | Large areas on thorax (especially on top of pronotum) clear of sculpturing and shiny in clear areas, rugae not parallel | S. diecki |
| 3a. | Omatidia coarse: 4(5) facets in maximum diameter and generally < 15 omatidia total; pronotum completely covered by parallel rugae; modestly shining; small | S. impar |
| 3b. | Omatidia finer: 7-8(10) facets in maximum diameter, and ~20 omatidia total; always dark brown; larger | S. brevicorne |
Reference: Smith, M. R. 1957. Revision of the genus Stenamma Westwood in America north of Mexico (Hymenoptera, Formicidae). American Midland Naturalist 57: 133-174.
