caruncle
From ZooTerms (Dictionary of Invertebrate Zoology)
caruncle (noun; Latin diminutive caro, flesh): 1. A fleshy excrescence or protuberance.
2. (Annelida) A sensory lobe extending behind the prostomium.
3. (Arthropoda: Chelicerata) In Acari, a basal expansion on the tarsus that forms a sucker.
