Scanning electron microscopy of antennal sense organs in Prosapia bicincta(Say) (Hemiptera : Cercopidae)

The external morphology of the sensilla on the antennae of the adult spittl ebug, Prosapia bicincta (Say) (Hemiptera: Cercopidae), is described for the first time, using scanning electron microscope observations. The sensilla include one peg-like basiconic sensillum (about 65.05 to 65.90 mum in lengt h and 13.33 to 14.08 mum in width at base), 18 to 23 porous coeloconic sens illa (mostly 7.38 to 8.94 mum in diam), one campaniform sensillum and a clu ster of trichoid sensilla (about 45 to 55 mum long). The first two types of sensilla are located on the expanded flagellar base, while the latter two sensilla are on the pedicel.