some species containing only rudimentary eye spots. Ocelli are absent in all species. Wing morphology also significantly varies within the family with some species containing fully functional wings, while others contain either reduced (non functional or functional) wings or no wings at all. Parasites Streblid bat flies, which are parasites, are themselves infested by fungi of the order Laboulbeniales; these fungi are thus hyperparasites. References Further reading Wenzel, R.L. & Tipton, V.J. (eds.) (1966): Ectoparasites of Panama. Field Museum of Natural History, Chicago, Illinois, USA. Ectoparasites Parasitic flies Parasites of bats Brachycera families Hippoboscoidea Taxa named by Friedrich August Rudolph Kolenati