Revision of the South American genus Gaujonia Dognin (Noctuidae, Pantheinae) with descriptions of five new genera and twenty-one new species Author Martinez, Jose I. Florida Museum of Natural History, McGuire Center for Lepidoptera and Biodiversity, University of Florida, Gainesville, FL, 32611, USA, & Entomology and Nematology Department, University of Florida, Gainesville, FL, 326011, USA https://orcid.org/0000-0003-4368-2729 joemartinez@ufl.edu text ZooKeys 2020 985 71 126 http://dx.doi.org/10.3897/zookeys.985.51622 journal article http://dx.doi.org/10.3897/zookeys.985.51622 1313-2970-985-71 7A38B594F29D43F18CB18B108AC18A1C 673D74424EF656EF8EC4AC8BFB4D00FA Gaujoptera gen. nov. Gender. Feminine. Type species. Gaujoptera amsa sp. nov. Etymology. Gaujoptera is derived from the similarities with the genera Gaujonia and Lichnoptera . Included species. Gaujoptera is monotypic, the only species is Gaujoptera amsa sp. nov., which was misidentified as a Gaujonia species; however, morphological and molecular analyses resulted in recognizing a new genus that is positioned close to the genus Millerana (Fig. 1 ). Diagnosis. Gaujoptera is only known from two well-preserved male specimens and it has a close relationship with Millerana , not only genetically, but also by distinct morphological characters. Nevertheless, the wing pattern is more defined in Millerana than in Gaujoptera , which has a blurry pattern that is difficult to discern. In addition, the thorax is marbled with black, gray, brown, and sulfur-yellow scales, differing from species of Gaujonia , which have the black spots and patches well defined on the thorax. Gaujoptera does not have a V-shaped mark at the base of CuA2. The most important feature to differentiate Gaujoptera from Gaujonia is the presence of small clasper on the valva, similar to that of Lichnoptera . Description. Forewing and hindwing dark sulfur-yellow with an inconspicuous pattern, only reniform spot visible. Hindwing hyaline with scales only on margins. Antenna filiform, with a short brownish orange haustellum; eye hairy with short interfacial setae. Male genitalia simple in male with small triangular clasper; small, curved uncus; aedeagus shorter than vesica; vesica with small spines in middle. Female unknown. Immature stages. Unknown. Biology. Unknown.