mentigerous a. [L. mentum, chin; gerere, to bear] (ARTHRO: Insecta) Having a mentum.
mentum n. [L. mentum, chin] 1. (ARTHRO: Diplopoda) A median, slightly triangular sclerite in the gnathochilarium. 2. (ARTHRO: Insecta) a. The distal sclerite of a typical insect labium, bearing the palps and the ligula. b. In bees, the second joint bearing the palps, paraglossa and ligula.
meraspis larva (ARTHRO: Trilobita) The second larval stage with the pygidium located behind the cephalon; the thoracic region will appear during succeeding molts. see ho-laspis larva.
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