Gracilidris is a genus of ants in the subfamily Dolichoderinae, or odorous ants.  The genus currently contains two species, and the formal taxonomy is as follows:

Gracilidris Wild & Cuezzo 2006: 57-68. Original description of the worker.
   
          included species:
                    pombero Wild & Cuezzo 2006: 62. Original description of the worker.
                    humilioides Wilson 1985: 33. Original description of the worker, from fossil.
 
 

• Wild, A. L., and F. Cuezzo. 2006. Rediscovery of a fossil dolichoderine ant lineage (Hymenoptera: Formicidae: Dolichoderinae) and a description of a new genus from South America. Zootaxa 1142: 57-68.
• Wilson, E. O. (1985) Ants of the Dominican amber. 3. The subfamily Dolichoderinae. Psyche 92: 17–37.