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In this study, the effect of micronutrients on food consumption and development of Agelastica alni larvae was investigated. The pupa dry weight, the amount of pupa crude protein, the amount of pupa lipid and the developmental periods were taken into consideration in order to examine the development of larvae. Eight different artificial diets were prepared by increasing or decreasing the concentrations of the vitamin mixture (V) and salt mixture (T) by 100%, 50%, and removing the salt mixture or vitamin mixture from some diets. The larvae were fed individually in each dietary group and feeding experiments were performed in 10 replications. It has been determined that the highest consumption of diets is V/0.5T and the lowest consumption is 0.5V/T.A statistically significant negative correlation was found between salt concentration of diet and consumption and a positive correlation was found between vitamin concentrations of diet. A relationship between salt or vitamin concentrations of diet and pupa dry weight has not been established. A weak relationship was found between consumption amount and pupa crude protein amount. The salt concentration of the diet affects the amount of pupa lipid in the negative correlation, while the vitamin concentration affects the positive correlation. When the developmental stages of larvae for different diets were examined, the longest larval period was observed for the larvae fed on the V/-T diet and the shortest larval period was observed for the larvae fed on the 2V/T diet. As the vitamin concentration of the diet increases, the duration of development is shortened. As the length of development increases, the pupa dry weight and pupa lipid amount decrease. [ABSTRACT FROM AUTHOR]