Field and laboratory observations on the biology and development of Corinthiscus denticollis(Coleóptera: Cleridae: Enopliinae) carried out at Agua Dulce (IV región, Chile) by monthlycollections during May 1985 to May 1986, plus other records on the whole range of the species, arediscussed in this paper. A tentative life cycle scheme is offered and observations on the copula of thespecies is also presented. Immature stages are also described. Association of the species with plantsof genera Puya (Bromeliaceae) and Lobelia (Lobeliaceae), from xerophilous habitat in Chile, isanalyzed. The potential food resources for larvae and adults is discussed. Geographical distributionof the species is established throughout records of 162 examples.