RESUMEN
ABSTRACT A fortuitous observation of mate-guarding behavior of male Chrysoprasis a. auriventris is presented here. In our observation, a male hold onto the female's body using his forelegs and walks along with her while she lays the eggs into the trunk slits. While guarding the female, the male adopted aggressive postures and attacked rival males that approached her. We suggest that the mate-guarding behavior may explain the male's elongated mid and hindlegs in this species, under a functional perspective. Additionally, a new host plant association was recorded.
RESUMEN
Four new species are described: Caribbomerus jaliscanus sp. nov. (Cerambycinae, Graciliini), from Mexico; Championa zarazagai sp. nov. and Championa chihuahuaensis sp. nov. (Cerambycinae, incertae sedis), both from Mexico; and Scopadus selkingi sp. nov. (Lamiinae, Acanthomerosternoplini), from Panama. We also propose keys for the following genera: Neocompsa Martins, 1965; Placoclytus Chemsak Linsley, 1974; Nyssicus Pascoe, 1859; Championa Bates, 1880, and Scopadus Pascoe, 1857. Additionally, the differences between Hypexilis Horn, 1885 and Caribbomerus Vitali, 2003 are provided, Caribbomerus howdeni (Napp Martins, 1984) is synonymized with Hypexilis pallida Horn, 1885, and new records are registered.