Feeding by sorghum, earhead bug. Calocoris angustatus Lethierry resulted in changes in the nutrional content of sorghum seeds. The depletion in starch (6.67 to 28.39%) and protien (27.3 to 52.6%) contents in infested grain was noted Free amino acid contents increased appreciably in the infested grain seeds to the tune of 88 89 to 396.00 per cent over healthy seeds.