Figures 1-2 from: Prous M, Heidemaa M, Shinohara A, Soon V (2011) Review of the sawfly genus Empria (Hymenoptera, Tenthredinidae) in Japan. ZooKeys 150: 347-380. https://doi.org/10.3897/zookeys.150.1968

Figures 1-2 - Distances measured on the head capsule. 1 Empria quadrimaculata, head in dorsal view, female (NSMT083) (A, head length, B, head breadth, C, breadth of the postocellar area, D, length of the postocellar area, E, minimal distance between the eye and the occipital carina = head length behind the eye, F, length of the eye) 2 Empria quadrimaculata, head in anterior view, female (NSMT083) (A, minimal distance between toruli, B, malar space).