ligula

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ligula (noun; plural ligulae; Latin ligula, little tongue): 1. (Annelida: Polychaeta) Lobe of the parapodium.

2. (Arthropoda: Insecta) a. The terminal lobe or lobes of the labium; the glossae and paraglossae collectively. b. In adult dipteran mosquitoes, the sharp-pointed lobe on the midline of the labium between the labella; ligular lobe. c. In male Odonata, the strongly curved process over the stem of the prophallus.

3. (Bryozoa) A calcareous projection from the cross-bar of an avicularium.

4. (Mollusca: Cephalopoda) In octopods, a specialized terminal area of the hectocotylus.