SUMMARY
In this contribution we update the information about the type material associated to 23 species of Coleoptera Curculionoidea, families Belidae (subfamily Oxycorininae) and Curculionidae (subfamilies Entiminae and Cyclominae), deposited at the Museo de La Plata (MLP). Most species were described by the specialists R. S. Anderson, M. G. del Río, A. A. Lanteri, J. J. Morrone and F. Ocampo during the last twenty years. We also include types corresponding to species described by C. Bruch, K. Heller, E. Hambleton and A. Hustache, not treated in previous contributions. For each species we provide the original and valid names, bibliographic references, categories of types, code-numbers according to the rules of the Entomology Division of the Museo de La Plata, sex of the specimens when it is indicated, and data on the labels (exact transcription).