Abstract
Water and fat content and the fatty acid composition of the fats of Agria affinis (Fallén) were determined over the period from mature larvae to newly emerged adults. During pupation the insects lost about 30% of their larval weight; 85% of this was water and 7% was fat. The loss was most rapid during puparium formation and for 2 or 3 days thereafter. In the fat, the concentrations of 14 carbon fatty acids and stearic acid remained constant; the concentrations of palmitic, palmitoleic, and oleic acids decreased by about 3, 8, and 4% respectively; and the concentrations of linoleic and erucic acids increased 11 and 3% respectively.

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