Update to: New butterfly taxa and findings from genomic analysis.

Due to the U.S. government shutdown, GenBank services were unavailable, and accession numberscould not be obtained for the sequences reported in the original publication. This update provides the GenBank accession numbers for these sequences, together with additional taxonomic findings accumulated since the initial study. One genus, 16 species and four subspecies are proposed as new (type species or localities in parentheses): Madaga Grishin, gen. n. (Artitropa alaotrana Oberthür, 1916), Udranomia eurianus Grishin, sp. n. (Ecuador: Napo), Entheus dalina Grishin, sp. n. (Brazil: Pará), Entheus ambo Grishin, sp. n. (Colombia: Cauca), Entheus pico Grishin, sp. n. (Colombia: Valle del Cauca), Entheus punyo Grishin, sp. n. (Colombia: Cauca), Porphyrogenes castana Grishin, sp. n. (Brazil: Amazonas), Porphyrogenes foxias Grishin,sp. n. (Suriname), Porphyrogenes tornus Grishin, sp. n. (Brazil: Rondônia), Porphyrogenes sepia Grishin, sp. n. (Brazil: Rondônia), Bungalotis ryta Grishin, sp. n. (Panama: Chiriquí), Pseudodrephalys gap Grishin, sp. n. (Brazil: Rondônia), Grais ecuadoricus Grishin, sp. n. (Ecuador: Sucumbíos), Grais eremitus Grishin, sp. n. (USA: Texas), Hoodus westudus Grishin, sp. n. (Ecuador: Orellana), Eutus brunninotatus Grishin, sp. n. (Bolivia: Santa Cruz), Lento mysto Grishin, sp. n. (Bolivia: La Paz) and Porphyrogenes probus curvatus Grishin, ssp. n. (Costa Rica: San José) (Hesperiidae); and Eurema ella marca Grishin, ssp. n. (Peru: Cajamarca), Eurema agave panave Grishin, ssp. n. (Panama: Colón), and Eurema agave livara Grishin, ssp. n. (Ecuador: Bolívar) (Pieridae). Genomic sequencing revealed additional specimens of recently described species of Entheus Hübner, [1819], previously known from a single specimen. We treat the following taxa of Lasaia (Lasaia) H. Bates, 1868 (Riodinidae) as valid: L. rosamonda Weeks, 1900, stat. rest., L. callaina Clench, 1972, stat. rev., L. maria anna Clench, 1972, stat. rest., L. oaxacensis Grishin, 2024, stat. rest., and L. cola Grishin, 2025, stat. rest.; as well as Lissia laura (Evans, 1937)stat. nov. (not Lissia luehderi (Plötz, 1879)), and Ephyriades brunnea electra (Lintner, 1881), stat. nov. Lectotype and neotype are designated for Antigonus fumosus Plötz, 1884 (Brazil) and Anastrus stigmaticus Mabille, 1883 (Brazil), respectively, establishing these names as objective synonyms.