from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The basal part of the labium of insects, which bears the mentum.

from the GNU version of the Collaborative International Dictionary of English

  • n. The basal part of the labium of insects. It bears the mentum.

from The Century Dictionary and Cyclopedia

  • n. In entomology, the proximal one of two basal median parts or pieces of the labium, the other being the mentum; the proximal one of the two basal parts of the second maxilla. See cuts under mouth-part, palpus, Hymenoptera, and Insecta.


sub- +‎ mentum (Wiktionary)


  • Mentum: a labial sclerite bearing the movable parts; attached to and sometimes fused with the sub-mentum; corresponds to the (united) stipes of maxillae: in Coleoptera, what is usually called mentum is really submentum: in Diptera, the term is applied to the posterior oral margin: in Hymenoptera, is part of "tongue," the second joint bearing the labial palpi, paraglossae and ligula.

    Explanation of Terms Used in Entomology

  • Lora: the chitinous bands connecting the submentum with the cardo of maxilla (Comst.): the submentum: small cords upon which the base of the proboscis is seated (Say): the anterior part of the genae at the edge of the mouth: the corneous processes to which the muscles flexing the mouth in certain Diptera are attached, and in that sense the palpifer of the maxilla: in Homoptera, the small sclerite at side of clypeus and front, extending laterally to the genae.

    Explanation of Terms Used in Entomology

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