anal veins).
* Larvae have mouth structures and glands to make and manipulate silk.

Thus, these two extant orders are sisters, with Tarachoptera basal to both groups. Amphiesmenoptera probably evolved in the Jurassic. Lepidoptera differ from the Trichoptera in several features, including wing venation, form of the scales on the wings, loss of the cerci, loss of an ocellus, and changes to the legs.

Amphiesmenoptera

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