Two species of the moth genus Pero Herrich-Schäffer, 1855 (Lepidoptera, Geometridae, Ennominae, Odontoperini) are added to the fauna of the Andes of southern Peru in the Arequipa Department. Pero lopezi Vargas & Palacios sp. nov. is described and illustrated based on male adults collected in Pocsi, at 2900 m elevation. Pero atridisca Dognin, 1906, previously known from Angasmarca (La Libertad), is recorded for the first time in Arequipa, significantly expanding its distribution range.
Bibliographical noteFunding Information:
We thank Adriana Chalup, Antoine Lévêque, Axel Hausmann and Gunnar Brehm for kind comments on a previous version of the manuscript, Lafayette Eaton for checking the English. The first author would like to thank the Universidad Nacional de San Agustin de Arequipa for financial support through contract number TP-25-2019-UNSA.
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