Resumo -A ocorrência da praga quarentenária (A2), Sinoxylon unidentatum Fabricius (Coleoptera: Bostrichidae) foi confirmada e interceptada no Porto do Rio de Janeiro, em paletes oriundos da Indonésia. Constatou-se que o brometo de metila não foi suficiente para inibir a ação dos insetos nos paletes. Sugere-se, como medida de monitoramento, a instalação de armadilhas etanólicas nos locais de armazenamento e trânsito de madeiras ou material lenhoso. Interception of Sinoxylon unidentatum (Coleoptera: Bostrichidae) in Rio de Janeiro State, BrazilAbstract -The occurrence of quarantine pest (A2), Sinoxylon unidentatum Fabricius (Coleoptera: Bostrichidae) was confirmed and intercepted in Rio de Janeiro port on pallets originated from Indonesia. It was found that methyl bromide was not sufficient to inhibit the action of the insects on the pallets. It is suggested as monitoring measure, the installation of ethanolic traps storage sites and transit of wood.

Heterobostrychus aequalis (Waterhouse, 1884) (Coleoptera: Bostrichidae) is considered a severe pest for wood and wood products in regions where it is established. In Brazil, so far, there are no records of its establishment. Therefore, this work reports the interception of this Bostrichidae in the Harbor of Rio de Janeiro, on pallet wood from India. It also defends the maintenance of this insect as an absent quarantine pest (A1), by the Ministry of Agriculture, Livestock and Supply. It also conducts a discussion that addresses the efficiency of wood treatments, usually used to prevent the spread of quarantine pests in environments where there is international transit of wood, demonstrating that they may not be efficient in this regard, especially for insect species that have the capacity to lay eggs on dry wood. In this context, it also suggests population monitoring, combined with inspections, as an aid measure for the early detection of this pest in an environment where there is international transit of wood.

Este trabalho registra a interceptação das Pragas Quarentenárias Ausente (A1), Monochamus galloprovincialis (Olivier, 1795) e Monochamus sutor (Linnaeus, 1758) (Coleoptera: Cerambycidae), no porto do Rio de Janeiro, em caixas de madeira e suportes tratados termicamente na Letônia. Embora a documentação aduaneira atestava a realização desse tratamento, face a interceptação dos insetos, pode-se apontar que tenha sido executado de forma inadequada, ou mesmo não ter sido feito. Sugere-se, como medida auxiliar nas ações quarentenárias, o monitoramento populacional, realizado pela instalação de armadilhas entomológicas nos locais de armazenamento e trânsito internacional de madeiras ou material lenhoso.