“…( Het. ) villeneuveana , which has been extensively studied particularly in Australia where it has been introduced as a biological control agent of pest snail species (Coupland, ; Coupland & Baker, , ; Carter & Baker, 1997a, 1997b; Baker, , ; Cowie, ; Leyson et al ., ; Coupland & Barker, ; Lawrence, Leonard & Baker, ; all as ‘ Sarcophaga penicillata Villeneuve’). Further research, particularly on their larval biology, is necessary to assess whether these species are all true parasitoids (as often stated in the literature without further biological information) or more similar to predators, and whether parasitism, where present, is obligate or facultative.…”