Figure 2 from: Bonacci T, Brandmayr P, Zetto Brandmayr T, Daniela Perrotta I, Guarino S, Peri E, Colazza S (2011) Volatile compounds released by disturbed and undisturbed adults of Anchomenus dorsalis (Coleoptera, Carabidae, Platynini) and structure of the pygidial gland. ZooKeys 81: 13-25. https://doi.org/10.3897/zookeys.81.1122

Figure 2 - Light microscope: A Dorsal aspects of pygidial gland; ed, efferent duct; r, reservoir; cc, collecting canal; sl, secretory lobe (Scale bar = 0.5 mm) (not treated with potassium hydroxide) B collecting canal (Scale bar = 0.125 mm) C reservoir with smooth constriction at about one third from its hind end (Scale bar = 0.125 mm) D insertion of collecting canal (black arrow) and efferent duct (white arrow) in the reservoir (Scale bar = 0.05 mm) E collecting canal with apical ramifications (white arrows) (Scale bar = 0.05 mm) F "floret" (sensu Eisner et al. 2001) (Scale bar = 0.015 mm) (treated with potassium hydroxide).