FIGURE 7 in Structure and phylogenetic significance of the sternum V glands in Trichoptera 2884

FIGURE 7. Drawings based on wholemounts (A, C, D) or histological sections (B, E). The drawings based on wholemounts are viewed through the cuticle and anterior is to the left with down being mesal; thus the drawings show the left gland. Muscle fibres are grey and all structures in the wholemounts are drawn as if they were transparent. Transparency of cuticle is not indicated. A–E: Hydropsychidae. A–C: Diplectroninae. A and B: Diplectrona sp. female, note the presence of long visible ductules connecting the secretory cells with the reservoir. A: Note that the opening muscle is contained entirely within the protuberance. B: Cross section through gland reservoir, reservoir musculature and secretory cells. C: Diplectrona zealandensis male, note the visible ductules connecting the secretory cells with the reservoir. D and E: Asmicridea edwardsii (Smicrideinae) male, the female is very similar. Note the visible ductules connecting the secretory cells with the reservoir. E: Cross section through gland reservoir, reservoir musculature, gland opening muscle and secretory cells. S IV, sternum IV; S V, sternum V; Go, gland opening; Ip, insertion point for muscle; Op, origin point for muscle; Rs, gland reservoir; Sc, secretory cells; T-t, Trichoptera-type opening muscle.