bothridial seta
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bothridium — n.; pl. ria [Gr. dim. bothros, trench] 1. (ARTHROPODA: Chelicerata) A chitinous cavity or projecting cup in which a bothridial seta is inserted; (bothridial seta + bothridium = trichobothrium). 2. (PLATYHELMINTHES: Cestoda) One of 4 muscular… … Dictionary of invertebrate zoology
