The activity of aqueous extracts at 5% from seeds of six wild lupin species wasevaluated to determine the effect on the growth, development and viability ofSpodoptera frugiperda. Six grams of powdered seeds of each plant sample wereadded in 120 mL of water during 24 h; then this aqueous extract was used in theexperiment. The diet was spilled in glass vials after neonates larvae of S.frugiperda were put in to vials. Immediately they were kept in the raise room at 27± 0.5°C, 60 ± 10% relative humidity and 14 h light, until larvae changed to pupaephase. Length and mortality of larvae and pupae phases, and weight pupae in eachdiet, were recorded. The results showed that at the evaluated concentration, theactivity of the extract was insectistatic; inhibiting feeding and growth of S.frugiperda. The extract was not insecticidal.