Arthropods associated with Guadua angustifolia in Pereira, Colombia. A project for the identification of arthropods present in stored Guadua angustifolia (Bambusoideae: Gramineae) was conducted in the environmental sciences department of the Technological University of Pereira (Risaralda-Colombia). Segments of G. angustifolia were stored for 10 months, after being treated with one of the following: injection, immersion, smoke, boucherie + pyroligneous acid, boucherie + boric acid + borax, and a control. Four to five pieces per treatment were randomly selected to collect the arthropods found in them. Thirteen species from five orders and 10 families were identified. The most abundant was Coleoptera, with the species Dinoderus minutus (F.) (Bostrichidae) and Eucalandra setulosus (Gyllenhal) (Curculionidae). Other species of Coleoptera were Tribolium castaneum (Herbst) (Tenebrionidae), Gnatocerus cornutus (F.) (Tenebrionidae), Catolethrus fallax Boheman (Curculionidae), and Rhizophagus sp. (Rizophagidae). Hymenoptera presented the species Rhabdepyris sp. (Bethylidae), Eusandalum sp. (Eupelmidae), Brasema sp. (Eupelmidae), Bracon sp. (Braconidae), and Necremnus sp. (Eulophidae). The Hemiptera Fulvius peregrinator Kirkaldy (Miridae) and Physopleurella mundula (White) (Anthocoridae) were also found, as well as species belonging to the Pachytroctidae, Liposcellidae and Amphlentomidae families. Foretic mites of the Macrochelidae family were also found in association with D. minutus. In 65% of the samples, the population levels of D. minutus were low, present mainly in G. angustifolia treated with injection and immersion with a solution of borax and boric acid. Attacks did not develop, due to the preservation treatments. In the control treatment, there was a 90% presence of insects, with an average of more than 50 individuals.