Fig. 5 in Morphology of the pronotal compound glands in Tritoma bipustulata (Coleoptera: Erotylidae)

Fig. 5 Schematic drawing of a gland unit of the pronotal compound gland of T. bipustulata. a One gland unit upon excretory duct, with sectional planes shown in b, c, and d. b Longi- tudinal section through gland unit (compare Figs. 2b, d, 3d). c Cross-section through proximal region of gland unit; lateral appendix directed towards bottom (compare Figs. 2c, 3b, f). d Cross-section through distal region of gland unit (compare Figs. 2c, 3a). In b, c, and d, cuticle in dark gray (darker outer layer) or medium gray (brighter inner layer); cytoplasm in light gray; contin- uous black lines are membranes (of cells or cellular organelles)