Figures 4-20 from: Han H, Jiang N, Xue D (2011) A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species. ZooKeys 139: 45-96. https://doi.org/10.3897/zookeys.139.1308

Figures 4-20 - Adults of Biston. 4–6 Biston melacron. 4 male (holotype 5 male 6 ditto, underside 7–10 Biston marginata. 7 male 8 ditto, underside 9 female 10 ditto, underside 11–12 Biston thoracicaria. 11 male 12 female 13–16 Biston betularia parva. 13 male (holotype of Biston huberaria tienschana) 14 male (holotype of Biston cognataria sinitibetica) 15 mal 16 female 17–18 Biston betularia nepalensis. 17 male 18 female 19–20 Biston robustum. 19 male (holotype of Biston robustum kiangsua) 20 male. Scale bar = 1 cm.