External anatomy of adult antennal sensilla of the fly, Trichopoda pennipes F. (Diptera: Tachinidae)

Abstract Antennae of both sexes of the feather-legged fly, Trichopoda pennipes F. (Diptera : Tachinidae) are described based on SEM observation. Socketed bristles and microtrichia were found on scape and pedicel, while a large number of different types of sensilla, interpersed with numerous microtrichia, were present on the entire surface of the 3rd antennal segment (funiculus). Seven types of sensilla, at least 3 of them olfactory, were observed and classified on the basis of external anatomical characteristics, such as shape, pore presence and density. A single deep pit, containing groups of sensilla, was present in both sexes on the lateral side of the funiculus.