38–39. Abdominal sterna I of 5th instar larvae, ventral views. 38 Drusus camerinus Moretti, 1981 (dotted ovals: fused setal bases) 39 Drusus aprutiensis Moretti, 1981. 40–41. Heads and pronota of 5th instar larvae, right lateral views. 40 Drusus aprutiensis Moretti, 1981 (dotted line: base of flat pronotal hump) 41 Drusus croaticus Marinkovic-Gospodnetic, 1971 (dotted line: base of high pronotal hump). 42–43. Meso- and metanota of 5th instar larvae, dorsal views. 42 Drusus croaticus Marinkovic-Gospodnetic, 1971 (w: width, l: length of anterior metanotal sclerite) 43 Drusus mixtus (Pictet, 1834) (w: width, l: length of anterior metanotal sclerite). Scale bars: 0.5 mm.

  Part of: Vitecek S, Martini J, Zittra C, Kuhlmann H, Vieira A, Waringer J (2020) The larva of Drusus dudor Oláh, 2017, including an updated key to larval Drusinae Banks, 1916 (Insecta, Trichoptera, Limnephilidae). ZooKeys 908: 137-155. https://doi.org/10.3897/zookeys.908.47032