FIGURE 12 in Structure and phylogenetic significance of the sternum V glands in Trichoptera 2884

FIGURE 12. Drawings based on wholemounts. The structures are viewed through the cuticle and anterior is to the left with down being mesal; thus all drawings show the left gland. Muscle fibres are grey and all structures are drawn as if they were transparent. Transparency of cuticle is not indicated. Cross hatching shows the presence and position of thickened cuticular ridges. A and B: Brachycentrus occidentalis (Brachycentridae) female and male, respectively. C–E: Phryganeidae. C: Agrypnia straminea male. D and E: Yphria californica female and male, respectively. 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.