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Although well studied in the Afrotropical Region, the genus Cosmorrhyncha Meyrick, 1913 (Lepidoptera: Tortricidae: Olethreutinae), has received little attention in the New World, where it apparently is restricted to the Neotropics from Guatemala south to Paraguay. Seven species are recognized, five of which are described as new: C. tonsana (Walker, 1863) (Type locality: Brazil); C. ocelliferana (Walker, 1863) (TL: Brazil); C. landryi Brown and Razowski, sp. n. (TL: French Guiana); C. parintina Brown and Razowski, sp. n. (TL: Brazil); C. macrospina Brown and Razowski, sp. n. (TL: Brazil); C. albistrigulana Brown and Razowski, sp. n. (TL: Costa Rica); and C. osana Brown and Razowski, sp. n. (TL: Costa Rica). Our circumscription of C. ocelliferana is rather broad and most likely encompasses a species complex rather than a single entity. Larvae of C. tonsana have been reared from Picramnia latifolia Tul. (Picramniaceae), Dialium guianense (Aubl.) Sandwith (Fabaceae), and Machaerium seemannii Benth. ex Seem. (Fabaceae) in Costa Rica; and those of C. albistrigulana from Dialium guianense (Fabaceae).
Eight new species of Eucosmocydia Diakonoff are described and illustrated from the Afrotropical region: E. pappeana Brown and Razowski, new species (TL: Kenya); E. deinbolliana Brown and Razowski, new species (TL: Kenya); E. ugandensis Aarvik, new species (TL: Uganda); E. lecaniodiscana Brown and Razowski, new species (TL: Kenya); E. nigeriana Brown and Razowski, new species (TL: Nigeria); E. pancoviana Brown and Razowski, new species (TL: Kenya); E. kirimiriana Brown and Razowski, new species (TL: Kenya); and E. macabensis Brown and Razowski, new species (TL: Mauritius). Three additional species are transferred to the genus: E. hymenosa (Razowski, 2013), new combination (TL: Nigeria); E. chlorobathra (Meyrick, 1911), new combination (TL: Seychelles); and E. trigonoptila (Meyrick, 1921), new combination (TL: Mozambique). We also transfer to the genus E. catamochla (Meyrick, 1932), new combination (TL: Indonesia), the first species recorded outside the Afrotropical region. We recognize two species groups in Eucosmocydia, and this contribution focuses on the oedipus Diakonoff, 1988 group (n = 13 species), the males of which are characterized by a unique flattened lobe from the base of the hindwing. Six species from Kenya were reared exclusively from native fruit of Sapindaceae; E. mixographa (Meyrick) was formerly reported from Fabaceae and Euphorbiaceae.
ZooBank registration. urn:lsid:zoobank.org:pub:AE18CA26-20E8-48D3-ABD0-22A0D9891065