44–46. Heads and pronota of 5th instar larvae, right lateral views. 44 Drusus mixtus (Pictet, 1834) (dotted line: base of high pronotal hump) 45 Drusus bolivari (McLachlan, 1880) 46 Drusus chauvinianus (Stein, 1874) (= Anomalopterygella chauviniana (Stein, 1874). 47–48. Heads and pronota of 5th instar larvae, frontal views. 47 Drusus bolivari (McLachlan, 1880) 48 Drusus chauvinianus (Stein, 1874) (= Anomalopterygella chauviniana (Stein, 1874). 49 Drusus ramae Marinkovic-Gospodnetic, 1971, 5th instar larva, pronotum, right lateral view. 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