auricle
From ZooTerms (Dictionary of Invertebrate Zoology)
auricle (noun; Latin auricula, little ear): 1. Any ear-shaped structure or small lobe-like appendage.
2. An atrium or chamber of the heart.
3. (Arthropoda: Insecta) a. In Hymenoptera, a flat plate forming a part of the pollen basket or corbicula of honeybees. b. In Anisoptera, ventrolateral outgrowths of tergum two; oreillets.
4. (Ctenophora) In Lobata, the four ciliated, delicate lobes projecting from the equatorial level.
5. (Mollusca) a. Paired chambers that receive blood from each side of the body. b. In Bivalvia, an earlike protuberance on the dorsal part of the shell.
6. (Platyhelminthes: Turbellaria) A blunt lateral chemical receptor.
7. (Rotifera) Paired ciliated lateral coronal projections that aid in swimming.
