n.; pl. -aria [Gr. akari, mite or tick; L. -arium, place for]1. (ARTHROPODA: Chelicerata)Any surface or anatomical feature, enclosed or not, internal or external, that regularly serves as an abode for mites.2. (ARTHROPODA: Insecta)In Hymenoptera, variously placed and constructed integumental cavities that serve as abodes for mites in certain eumenine wasps; originally defined as the enclosed acarid chambers of xylocopid bees.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.