The article focuses on the nutritional indices of the Khapra beetle, Trogoderma granarium (Everts), when fed on various wheat genotypes. The study reveals significant differences in the feeding performance of the beetle larvae across different wheat cultivars, with line N-91-9 showing the lowest food consumption and weight gain, while cultivars Gascojen and Tirgan exhibited the highest efficiency of conversion of ingested food. The findings suggest that certain wheat genotypes, particularly N-91-9, Heidari, and Aftab, may be less suitable for the beetle's development, indicating their potential use in pest management strategies. The research highlights the importance of understanding the interactions between pests and plant cultivars to develop effective pest control methods.