In Barro Colorado Island, a tropical ecosystem in the Atlantic basin of thePanama Canal, diversity, vertical and temporal distributions of (Coleoptera: Curculionidae) were studied. The catches were taken withPennsylvania ultraviolet light traps located in the canopy and understory, atheights of 3 and 27 meters respectively. The effective capture time of the trapswas for four years, 24 hours of the day. The specimens were identifiedtaxonomically at the species level and their abundances were quantified bystratum of the forest and by months of the year. Sixteen species were captured,considering that 73% of the species of the sampled locality was captured.Euplatypus parallelus was the most abundant species. The diversity andabundance was greater in the understory. In the canopy, in the summer months,abundance was lower compared to the understory. The temporal distribution ofabundance in the canopy was lower in the summer months, while in theunderstory the catches were stable every month. The patterns of vertical andtemporal distribution of abundance in the understory are related to the necessaryhumidity and the availability of food resources for these insects and theirsymbionts.