The Cosmopterigidae of the Galdpagos Islands include eight species: Cosmopt
erix attenuatella (Walker, 1864), C. yvani sp. n., C. madeleinae sp. n., C.
galapagosensis sp. n., Pyroderces rileyi (Walsingham, 1882), Ithome volcan
ica sp. n., Periploca longipenis sp. n., and Periploca darwini sp. n. The n
ew species are described and all species are illustrated. Cosmopteryx [sic]
apiculata Meyrick, 1922 is synonymized with C. attenuatella. Cosmopterix g
alapagosensis was reared on Eleocharis mutata (L.) Roem. & Schult. (Cyperac
eae).