FIGURE 20 in Structure and phylogenetic significance of the sternum V glands in Trichoptera 2884

FIGURE 20. SEMs of external structures. A: Cyrnellus fraternus (Polycentropodidae) female, protuberance on sternum V, note the groove running from the gland opening to the apex. B–H: Hydropsychidae. B, C: Arctopsychinae. B: Arctopsyche grandis female, male very similar, gland opening on bald protuberance. C: Parapsyche elsis male, female very similar, gland opening on small bald protuberance. D–F: Leptonema albovirens (Macronematinae). D: Female. E: Male. Both: gland opening at anterior end of ovoid area of textured cuticle, area much larger in male. F: Male, close-up of textured cuticle. G, H: Hydropsychinae. G: Cheumatopsyche speciosa male, female very similar, gland opening on small bald bulge. H: Hydropsyche placoda male, female very similar, gland opening on bulge. Go, gland opening. Scale bars: A–D, F, H = 10 µm; E = 100 µm; G = 1 µm.