1a. Many short hairs on thorax (8-20 on dorsal surface of mesosoma) and scattered elsewhere C. lineolata
1b. No erect hairs on thorax except on corners by mesosoma and there either one or 2 pairs of erect hairs pointing posteriorly C. cerasi
Reference: Buren, W. F. 1968. A review of the species of Crematogaster, sensu stricto, in North America (Hymenoptera, Formicidae) Part II. Descriptions of new species. Journal of the Georgia Entomological Society 3: 91-121.
Crematogaster lineolata
