A new species of Cethosia and a new subspecies of Delias (Lepidoptera: Nymphalidae and Pieridae) from New Ireland, Papua New Guinea
Two butterflies Cethosia vasalia n.sp. (Nymphalidae) and Delias messalina lizzae n.subsp. (Pieridae) are described and figured from mid to high montane New Ireland. Cethosia vasalia n.sp. and C. obscura Guérin-Méneville are parapatric locally within the Bismarck Archipelago. These two species and their subspecies are compared in detail.