(16) Apterostigma sp. 1, auriculatum species-group

Material examined. COLOMBIA: Nariño • 1 worker; Barbacoas; 01°21′49″N, 078°04′45″W; alt. 640 m; 25–29 Jul. 2006; A. Miranda leg.; UNAB 5459 .

Comment. This presumably new species is only known from a single worker and will be described in a forthcoming taxonomic revision of the A. auriculatum species-group.