(1–2) Male hind tibia and tarsus of Idaea proximaria 1 lateral view 2 medial view. (3–14) Adults of Idaea proximaria complex 3–7 I. proximaria 3 male, Jiguanshan, Sichuan 4 female, Baoxing, Sichuan 5–7 Jinsixia, Shaanxi 5–6 male 7 female 8–9 I. rectangularis sp. nov. 8 holotype, male, IZCAS 9 paratype, female, IZCAS 10 I. rectispina sp. nov., holotype, male, IZCAS 11–12 I. setosa sp. nov. 11 holotype, male, IZCAS 12 paratype, female, IZCAS 13 I. linearis sp. nov., holotype, female, IZCAS 14 I. craspedota. 15 Neighbour-Joining (NJ) tree of selected proximaria complex based on the Kimura two-parameter model. Scale bar: 1 cm (3–14).

 
 
  Part of: Cheng R, Xue D-Y, Jiang N, Han H-X (2023) Review of the Idaea proximaria complex (Lepidoptera, Geometridae, Sterrhinae) with descriptions of four new species. ZooKeys 1169: 293-305. https://doi.org/10.3897/zookeys.1169.106815