†Ifasya Garassino and Teruzzi 1995 (decapod)
Parent taxon: Penaeoidea according to C. E. Schweitzer et al. 2010
Sister taxa: Aciculopoda, Aegeridae, Aristeidae, Bylgia, Carinacaris, Carpopenaeidae, Cretapenaeus, Drobna, Dusa, Hakelocaris, Koelga, Libanocaris, Longichela, Macropenaeus, Microchela, Micropenaeus, Penaeidae, Pseudobombur, Pseudodusa, Rauna, Rhodanicaris, Satyrocaris, Sicyoniidae, Solenoceridae
Subtaxa: Ifasya madagascariensis, Ifasya straeleni
Ecology: epifaunal carnivore