Crematogaster scutellaris

vi. Crematogaster scutellaris -group

1. Petiole moderately (Fig. 14 a) to broadly flared (Fig. 15 a), rarely suboval (Fig. 18 a).

2. Postpetiole bilobed, with distinct median longitudinal impression (e.g. Figs 14 b & 15b); rarely only with faint impression and postpetiole indistinctly bilobed (e.g. Fig. 18 b).

Definitive members are: C. scutellaris Olivier, C. ionia Forel, C. opaca Mayr, C. isolata Buren, C. marioni Buren, C. coarctata Mayr, C. lineolata Say, C. pilosa Emery. It seems likely that all of the (non- Orthocrema) Nearctic and Palaearctic taxa belong to this clade, as well as a few members of the subgenus Crematogaster that have entered the margins of the northern Neotropics.