The genus Alurnus Fabricius, 1775 (Chrysomelidae: Cassidinae: Alurnini) in Colombia with four new species records and an updated checklist in the country Author Rendón-Ramírez, Alejandra Universidad Nacional de Colombia Author Vergara-Navarro, Erika Valentina Corporación Colombiana de Investigación Agropecuaria, Agrosavia. Colección Taxonómica Nacional de Insectos “ Luis María Murillo ” CTNI, C. I. Tibaitatá, Mosquera (Colombia) Author Quiroz-Gamboa, John Alveiro Museo Entomológico Francisco Luis Gallego. Universidad Nacional de Colombia text Zootaxa 2024 2024-12-11 5551 1 116 130 https://doi.org/10.11646/zootaxa.5551.1.4 journal article 10.11646/zootaxa.5551.1.4 1175-5326 14390033 8F4FA9A5-750D-4EE5-9FB4-A978401CF35C * Alurnus grossus Fabricius, 1775 ( Fig. 8 ) Hispa grossus Berge, 1844 Crioceris indica Voet, 1806 Alurnus tricolor Olivier, 1789 Alurnus grossus nigricans Jacobson, 1899 Diagnosis. Antennal scape subglobose, equal in length than pedicel. Vertex of head finely punctate; without medial sulcus or carina; front and clypeus punctate. Pronotum with posterior angle with strong tooth. Elytra yellow, glabrous, with black spots on humeral calli. Tibia constricted near apex; with a line of setae on inner apical margin ( Staines 2013 ). Material examined . COLOMBIA : Valle del Cauca , Calima, forest, xii. 1960 . Coll. R . Vélez , ( 1ex. ) [MEFLG-6276], Río Calima , quebrada el Pital , 12.xi.1980 . Coll. R . Torres , ( 2 exs. ) [ MHN-UPN ] . Measurements: n= 3. 28.33mm ±1,52mm Plant associations . None found. Distribution. Alurnus grossus is a new record for Colombia . Previously recorded for Brazil , Ecuador , French Guyana , Peru , Suriname ( Staines 2015 ). Comments. In the species key and redescription, it is mentioned that the pronotum is red; however, we record two specimens with a black pronotum.