1980] 
Post & Jeanne — Sternal Glands of Polistes 
53 
Figure 4. Longitudinal section (2 /r thick) through the glandular area of the sixth 
gastral sternite of P. canadensis. GC=glandular cells; E=epidermis; CD=glandular 
cell ducts. Figure 5. SEM photograph of the glandular cell duct openings 
(indicated by arrows) at the base of the sternal brush hairs of P.fuscalus. Anterior is to 
the upper right. Scale = 0.05 mm. Figure 6. Transverse section (2 /j thick) through 
the glandular area of the sixth gastral sternite of P. fuscatus. Midline is to the left. 
GC=glandular cells; AT=adipose tissue; CD=glandular cell ducts; BL=basement 
lamella. 
