In many immature arthropods, one of the arms of the epicranial ecdysial line; course varying widely among insects; often hot homologous between different insects. In mosquito larvae, apparently normally ending in the lateral part of the clypeus about opposite the antennal socket; some authors have failed to distinguish the apical part of this line and the part of the epistomal suture lying parallel and slightly lateral to it. In mosquito pupae, lying on each side of the dorsal apotome and apparently ending dorsally near the base of the antenna. See ecdysial line, and epicranial ecdysial line in the larva section.
General: frontal ecdysial line