Longino (2003) - A Crematogaster crinosa-complex species, C. stigmatica requires further taxonomic study. This species is part of a set of species that have a deep propodeal suture: The distinctive feature of these forms is a deeply invaginated propodeal suture and an elevated and compressed dorsal face of propodeum. From my cursory examination, Crematogaster goeldii, Crematogaster stigmatica, and Crematogaster unciata were very similar. They were bicolored, with red brown head and mesosoma and contrasting black gaster. The anteroventral petiolar tooth was moderately well developed and the pilosity was much like Crematogaster torosa. The types of Crematogaster chodati were uniform red brown, and the setae on the mesosoma and fourth abdominal tergite were longer and less flattened. The types of Crematogaster heathi had the coloration of goeldii and the pilosity of chodati. The invaginated propodeal suture is itself a variable character, grading into the condition seen in crinosa and torosa, and so the discussion regarding the forms with striate face applies here as well. Crematogaster goeldii and related forms may be synonyms of other species, multiple distinct species, or one variable species.
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- stigmatica. Crematogaster goeldii var. stigmatica Forel, 1911c: 301 (w.m.) BRAZIL. Combination in C. (Orthocrema): Emery, 1922e: 135. Subspecies of torosa: Bolton, 1995b: 163. Raised to species: Longino, 2003a: 130.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Longino (2003) - Crematogaster stigmatica. Syntype worker, male: Brazil, Minas Gerais, Mar d'Espanha (Zilsán) Musee d'Histoire Naturelle Genève (examined).
- Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp. (page 163, Subspecies of torosa)
- Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 135, Combination in C. (Orthocrema))