The 4th instar larvae of the red imported fire ant, Solenopsis invicta Buren, depends on the serine proteinase to digest food and to provide the proteins for the whole population.

• 入侵红火蚁Solenopsis invicta Buren四龄幼虫依靠丝氨酸蛋白酶来消化蛋白食物，以满足整个蚁巢对蛋白质的需求。