a. [f. as prec. + -AR.] Bell-shaped; having a bell-shaped pedicle.
1813. Bingley, Anim. Biog., III. 270. The campanular wasp.
1865. J. G. Wood, Homes without H., xiv. 259. Another species of British Tree Wasp is the Campanular Wasp (Vespa sylvestris).