Flagella are primarily present in prokaryotic asexual organisms. Female flagella refers to a sensory organ present in some eukaryotes. Here is the abstract from a recent paper. Hope this helps. The acoustic signal, or courtship song, is necessary to elicit normal levels of female mounting of the male during courtship.
Antennal input is also crucial since antennectomized females show highly reduced levels of mounting.
The antennal flagellum is a multimodal sensory organ, which contains both mechanoreceptors and chemoreceptors.