“…The corn weevil, Sitophilus zeamais (Motschulsky) and the large grain borer Prostephanus truncatus (Horn), are the most important pests of stored corn (Birkinshaw & Smith, 2000;Ribeiro et al 2007;Demissie et al 2015) causing losses of up to 30 % (Martinez et al 2013). To reduce damage to stored grains, physical control methods (extreme temperatures, controlled atmospheres) and chemical methods (phosphine) are used, the latter can cause adverse effects on humans such as blisters, headaches, dizziness, bronchitis, and motor problems, among others (Reyna et al 2012).…”