Аннотация: A comparative study of the wings internal and external morphology has been conducted in 39 species of Phryganeida and 57 species of Papilionida. A pronounced reduction of veins begins when the wing length decreases below 3 to 4 mm. The increase in the body size is associated with the development of jugal sclerotization into true veins, which are considered to be a differentiated part of the anal system. In the most primitive moths neither increase nor decrease of the absolute size leads to changes in the wing venation. The vein homology, wing design in the hypothetical ancestor of Amphiesmenoptera, as well as the differentiation of the venation in the wing evolution are discussed.
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GRODNITSKY, D.L.