(18) Apterostigma sp. 3, pilosum species-group

Material examined. COLOMBIA: Antioquia • 1 worker; Medellín; 06°15′44.4″N, 075°34′33.4″W; alt. 1460 m; May 1999; MEFLG members leg.; MEFLG 5786 .

Comment. This new Apterostigma species is only known from a single worker and will be described in a forthcoming taxonomic treatment.