On Lucio pictum (Gorham, 1880) (Coleoptera: Lampyridae): redescription, updated range, and notes on sexual dimorphism

The genus Lucio Laporte, 1833 is comprised of 16 species distributed throughout the Neotropics and is characterized by the presence of biflabellate antennae with asymmetric lamellae. In Brazil, there are nine species whose morphology has not been further explored taxonomically since the original description, many of them short, ambiguous and without illustrations, making the species identification in the genus difficult. Here, we provide a taxonomic review of Lucio pictum (Gorham, 1880) based on the examination of the holotype and 24 adult specimens. We provide a redescription of the male, description of the female (sexual dimorphism), illustrations, distribution map with new records for South America (Brazil and Peru) and notes on the biology. Additionally, we provide photographs of the Lucio rufiventris Olivier, 1885 and L. castelnaui (Kirsch, 1865) types.