Various subsets of features found in Icarops species are represented in some molossine bats (sensu Legendre, 1984).
Most similarities are shared with species of Molossops (e.g., M. temminckii), Neoplatymops, Cynomops (e.g., C. brachymeles), and Myopterus (e.g., M. albatus).
These features include a deep dentary with tall ascending ramus, tendency to lose I2, and in some cases a fused dentary symphysis.