Apterostigma collare valid Costa Rica. Neotropic.
Emery, C. 1896g. Studi sulle formiche della fauna neotropica. XVII-XXV. Bullettino della Società Entomologica Italiana 28:33-107.   124611

Apterostigma collare angulatum obsolete combination Panama. Neotropic.
Weber, N. A. 1938b. The biology of the fungus-growing ants. Part IV. Additional new forms. Part V. The Attini of Bolivia. Revista de Entomologia (Rio de Janeiro) 9:154-206.   129712

Apterostigma collare dubium obsolete combination Panama. Neotropic.
Weber, N. A. 1938b. The biology of the fungus-growing ants. Part IV. Additional new forms. Part V. The Attini of Bolivia. Revista de Entomologia (Rio de Janeiro) 9:154-206.   129712