Mastoptera minuta (Costa Lima, 1921). Wenzel, Tipton, and Kiewlicz, 1966: 515-518, figs. 82B, 85; Wenzel, 1976: 100-102, fig. 40B.
Specimens examined: La Selva: 1f from Phyllostomus hastatus, 5m 6f from Tonatia silvicola.
Note: Wenzel (1976) considered Mastoptera minuta to be restricted to the host Tonatia silvicola, while several undescribed species differing in host, size, and number of setae on various structures were noted but not described. In La Selva, Mastoptera minuta can only be distinguished from Mastoptera new species #1 by host species and a consistent difference in size.