In somes areas of Brazil C. ampla is parasitized by Cephalotes specularis, which is able to find and exploit foraging trails of C. ampla.
Longino (2003) - A Crematogaster crinosa-complex species. Crematogaster ampla has a distinctive character that distinguishes it from all other Crematogaster. The fourth abdominal tergite has a subtriangular impression posterior to the postpetiolar insertion. This impression is completely smooth and shining, contrasting with the surrounding granular microsculpture. On some small workers the fourth abdominal tergite is completely smooth and shining, but the triangular impression is still distinct. In all other Crematogaster there may be an impression anterior to the postpetiole, but not posterior to it. Other characters are similar to crinosa, including a long, acute, anteroventral petiolar tooth, abundant setae on the fourth abdominal tergite, dorsal and posterior faces of propodeum meeting at an angle, and a strongly arched promesonotum. Unlike other crinosa complex species, the scapes and tibiae sometimes have one or two erect setae, especially on large workers.
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Koch et al. (2018) sampled this species in Caryocar barsiliense trees, in southeastern Brazil cerrado, as part of a study examining species interactions in ant-plants.
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- ampla. Crematogaster brevispinosa var. ampla Forel, 1912f: 211 (w.) COLOMBIA. Combination in C. (Orthocrema): Emery, 1922e: 134. Raised to species: Longino, 2003a: 128.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Longino (2003) - Syntype workers: Colombia, Magdalena, Santa Cruz near Santa Marta (Forel) Musee d'Histoire Naturelle Genève (examined, worker here designated LECTOTYPE).
The syntypes at MHNG were a combination of Crematogaster ampla and Crematogaster crinosa, necessitating designation of a lectotype.
- Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 134, Combination in C. (Orthocrema))
- Forel, A. 1912g. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mém. Soc. Entomol. Belg. 19: 211-237 (page 211, worker described)
- Koch, E. B. A., W. Dattilo, F. Camarota, and H. L. Vasconcelos. 2018. From species to individuals: does the variation in ant-plant networks scale result in structural and functional changes? Population Ecology. 60:309-318. doi:10.1007/s10144-018-0634-5
- Longino, J.T. 2003a. The Crematogaster of Costa Rica. Zootaxa 151: 1-150. PDF (page 128, Raised to species: new status)
- Powell, S., Del-Claro, K., Feitosa, R.M. & Brandao, C.R.F. 2014. Mimicry and eavesdropping enable a new form of social parasitism in ants. American Naturalist 184, 500-509. doi:10.1086/677927