Elytrimitatrix (Grossifemora) pubescens Santos-Silva & Hovore, 2008 (Disteniidae) is redescribed based on three males, morphological and chromatic variation in the species is reported. The unknown female of Neocompsa flavoquadripunctata Botero & Santos-Silva, 2022 is shortly described and a new Mexican state record is provided. The absence of the paratype of Nealcidion bruchi (Melzer, 1934) in the MZSP collection (see acronym below) is reported, and the date of description of the species is commented. Alphinellus Bates, 1881 is transferred from Acanthocinini to Desmiphorini. Alphinellus minimus Bates, 1881 is recorded for the first time from the Mexican state of Campeche and from Guatemala. Three new species are described: Psyrassa peninsularissp. nov. (Cerambycidae, Cerambycinae, Elaphidiini) from Mexico (Quintana Roo); Pseudastylopsis skillmanisp. nov. (Cerambycidae, Lamiinae, Acanthocinini), from Guatemala; and Eranina amaurasp. nov. (Cerambycidae, Lamiinae, Hemilophini), from Guatemala.