orbicula

Meaning

1. noun A dorsal sclerite over a hymenopteran arolium; a hard exoskeletal feature with species-specific shape that overhangs and protects the adhesive tip of such an insect's leg and around which the claw(s) curl. Abbreviation "or" or "rb".
2. noun A discina (brachiopod).

Similar words

opercle orbicularian discina orbiniid discophore ocoid ostracoid discinid ossicle discodrilid