Abstract
The adult stage of the plume mothAdaina jobimisp. nov.(Lepidoptera: Pterophoridae: Pterophorinae: Oidaematophorini) from the arid highlands of the western slopes of the Andes of northern Chile is described and illustrated. The wing pattern and genitalia ofA. jobimiresemble those ofA. excretaMeyrick, 1930, from Argentina, Ecuador and Peru andA. coquimboaeGielis, 2012, the only representative of the genus previously known from Chile. Morphological differences ofA. jobimiwith these two congenerics are discussed. Larval feeding and pupation ofA. jobimioccur on inflorescences of the native shrubBaccharis alnifoliaMeyen & Walp. (Asteraceae). The discovery ofA. jobimiprovides the first record of the genus in a long distribution gap in mainland South America west of the Andes Range, suggesting that the taxonomic diversity ofAdainain this area deserves further attention.
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