Dictionary

helus en · NOUN

Etymology

From Ancient Greek ἧλος (hêlos, “nail”).

Meanings

1. (rare) In scarabaeoid larvae, a coarse fixed spine located near the haptomerum.
   • The larvae of P. ferrieri exhibit remarkable features, including four protuberances on labrum, no helus on epipharynx, two scissorial teeth on each mandible, five stridulatory teeth plus a blunt protuberance on each maxilla, and the obtuse claws on the thoracic legs. 2024, Larval morphology of a Palearctic Rutelini, Parastasia ferrieri (Coleoptera, Scarabaeidae), with discussions on their feeding habits, page 185:

Forms