The sunny butterflies: new species of high montane pierids of the Catasticta poujadei group from the Peruvian Andes (Pieridae, Pierinae, Aporiina).

The Catasticta poujadei group, within the subgenus Hesperochoia Reissinger, is revised. Two new species, C. copernicus Pyrcz & Fhraeus sp. nov., and C. buszkoi Boyer & Pyrcz sp. nov. occurring near the timberline in Junn and Apurmac are described. Catasticta eximia Rber is reinstated as a species separate from C. poujadei, and a new subspecies, C. eximia tapuna ssp. nov., is described. The affinities of the species of the C. poujadei group are evaluated based on COI barcodes. Their distribution and habitats are described.

A new species of the enigmatic genus Oressinoma Doubleday from the Andes of central Peru (Lepidoptera: Nymphalidae, Satyrinae).

A new, and only the third known species of the Neotropical montane genus Oressinoma Doubleday is describedO. sorina n. sp., from the Andes of central Peru. It is distinguishable immediately from the other two congeners by the shape of the hindwing underside submarginal orange band, and by the male genitalia. The systematics of Oressinoma are reviewed. A preliminary analysis is carried out based on COI barcode confirming the separate specific status of O. sorina n. sp. in relation to other two congeners. Both barcode and genital morphology data suggest that the widespread O. typhla Doubleday may be a complex of allopatric or, locally parapatric species. The genus Oressinoma is the only neotropical member of the predominantly Australian subtribe Coenonymphina, represented in the entire Holarctic by one genus onlyCoenonympha Hbner, considered as the putative sister-genus of Oressinoma. Their origins and relationships are briefly discussed.