4. DISCUSSION
We found that skull size and inter-sex morphology was significantly different, variation that can be associated with the diet of the selected bat species; possibly as a result of differences in energy requirements during the reproductive season (de Camargo & de Oliveira, 2012). Although sexual dimorphism has been relatively well documented in vespertilionid bats, being the females larger and heavier than males (Bornholdt, Oliveira, & Fabian, 2008), in phylostomid bats this information is less documented despite it being the most diverse and distributed family in the Neotropics (Gardner 2008). However, López-Aguirre & Pérez-Torres (2015) identified that Artibeus lituratus females in Colombia had greater fluctuating asymmetry in the splanchnocranium presenting a differential on bite force.