Dermophthirius nigrellii n. sp. (Monogenea: Microbothriidae), an Ectoparasite from the Skin of the Lemon Shark, Negaprion brevirostris

Abstract

D. nigrellii sp. nov. is described from the skin of the lemon shark, N. brevirostris. D. nigrellii differs from the 2 previously known species, D. carcharhini and D. maccallumi, in: being larger in size and having a cirrus complex with a different structural appearance. The description of the opisthohaptor of D. carcharhini is amended based on reexamination of the type specimens and the recent rediscovery of D. carcharhini from the skin of a dusky shark, Carcharhinus obscurus, captured off New York City [New York, USA] and kept for 5 mo. on exhibit at the New York Aquarium.