Mecas LeConte 1852

Mecas LeConte, 1852 Mecas LeConte, 1852: 155. Mecas (Callusocollis) Özdikmen, 2025f: 2960. Syn. nov. Remarks. According to Özdikmen (2025f), Mecas belongs to the tribe Tetraopini. However, it actually belongs to Saperdini because Souza et al. (2020) synonymized Phytoeciini with it. Still according to Özdikmen (2025f): “In first group [Mecas (Mecas) LeConte, 1852: 155], the disc of pronotum convex, without any black, glabrous callus or spot medio-laterally;” and “In second group, the disc of pronotum convex, always at least with two black, glabrous callus or spots medio-laterally, and with or without an elongate or longitudinal, linear median callus toward the base.” We agree that Mecas appears to include at least two genera (not subgenera), especially by the inclusion of M. marmorata Gahan, 1892, which has slender body. Chemsak & Linsley (1973) also suggested the same opinion: “The elongate body, apically produced elytra, and cylindrical pronotum appear sufficient to exclude this species from Mecas.” However, we do not agree with the criteria proposed by Özdikmen (2025f) for dividing Mecas into two subgenera, as they are based merely on specific features (with or without glabrous spots on the pronotum; with or without slightly elevated glabrous gibbosities on the pronotum). Therefore, we are synonymizing Mecas (Callusocollis) with Mecas.