Erynnis funeralis, the funereal duskywing, is a butterfly of the family Hesperiidae. It is found from southern California, Arizona, New Mexico and Texas, south to Argentina and Chile. Strays can be found north up to northern Illinois, north-eastern Nebraska, central Colorado, southern Nevada and central California. The wingspan is 34–45 mm. Adults are on wing from March to December. There are three generations per year. The larvae feed on various legumes, including Robinia neomexicana, Medicago hispida, Lotus scoparius, Olneya tesota and vetch Vicia. Adults feed on flower nectar.