develops from third segment of antenna antennal segment 3 flugellum FBbt:00004515 fly_anatomy.ontology funiculus Largest segment of the antenna. It is bulbous, light grey in color and it bears numerous hairs and sensilla, including trichoid, basiconic, intermediate and coeloconic sensilla. It has an articulated joint with the second segment of the antenna. It contains the sacculus. https://www.ento.csiro.au/biology/drosophila/melanogaster.html?flagellomere%201 segment of antenna presumptive third segment of antenna