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The stem borer, Diatraea saccharalis, is considered to be the most relevant pest insect in sugarcane, an important crop in Ecuador. Cotesia flavipes is one of its biological control agents. Biological aspects of this parasitoid, amount of parasitized larvae and the effect of diet, breeding containers and age of the host larva on parasitism were studied. The parasitoid went through three larval stages, and completed its cycle in 16 days. Reproduction is arrhenotokous with a ratio of 2.11 females for each male. Regardless of the number of larvae exposed, a female only parasitized one larva of the host from which about 40 pupae emerged. The best combination for the development of parasitoids was the 18-day-old host perforated container fed with young corn (P <0.05). The results provide elements to consider for the mass breeding of this important biological control agent.

Biología de Cotesia flavipes Cameron sobre el Taladrador del Tallo, Diatraea saccharalis Fabricius, en Varios Medios de Cría