Phyllops falcatus inhabits lowlands and low mountains; otherwise, it has been collected in a variety of forested environments in Cuba, including evergreen, submontane, pine, and semideciduous forest (Tavares and Mancina 2008). This species is a foliage-roosting bat, according to currently available data, roosting in trees in small groups of no more than five individuals (Silva-Taboada 1979). The only available data on its diet are the findings of seeds of Cecropia scheberiana in fecal samples, and the capture of a single individual carrying a fruit of Syzygium jambos in western Cuba (Mancina and García-Rivera 2000). After feeding on the fruit of wild native fig trees, this bat drops seeds across the forests and clearings (Silva-Taboada 1979).

This species is known from Cuba and Hispaniola; and as a fossil, from Isle of Pines, Cuba (Simmons 2005). Recently, it was recorded in Key West (C. Mark, pers. comm.) and Grand Cayman and Cayman Brac (A. L. Band pers. comm.).

Research actions are needed to understand the reasons behind changes in abundance over the last 40 years; also, to know more about life history and threats faced by the species. This species is found in some protected areas, and seems tolerant to some degree of habitat disturbance.