Diagrammatic reconstructions of the leading (A,D,G), ventral (B,E,H), and dorsal (C,F,I) surfaces from a representative antennal flagellar segment (annulus 21, from the base of the flagellum) of female M. sexta showing the position of the styliform complex sensillum (filled star), type-A trichoid sensilla (open triangles), type-B trichoid sensilla (filled diamonds), type-A basiconic sensilla (open circles), type-B basiconic sensilla (open diamonds), auriculate sensilla (filled rectangles), type-A coeloconic sensilla (filled triangles), and type-B coeloconic sensilla (filled circles). The trailing surface in each of B and C, E and F, and H and I are to the left and right, respectively. Reproduced from Shields and Hildebrand, 1999b, with permission of the publisher.