Elcanidae

Key to the genera of Elcanidae View in CoL from Burmese amber

1 Metatibial dorsal spurs setulose ( Schall et al., 2024: Figure 8A); pronotum with lateral lobe emarginate at anterior part of lower margin ( Schall et al., 2024: Figure 8C)................................ Trigonelca Schall, Kotthof et Husemann, 2023 View in CoL

- Metatibial dorsal spurs never setulose (e.g., Figure 2D View FIGURE 2 ); pronotum with lateral lobe never emarginate at anterior part of lower margin (e.g., Figure 2C View FIGURE 2 )................................................................................ 2

2 Metatibial dorsal spurs spine-like (e.g., Figures 2A, 2D View FIGURE 2 )...................................................... 3

- Metatibial dorsal spurs leaf-like (e.g., Figures 5A, 5B, 5C, 5D View FIGURE 5 )................................................. 6

3 Mesofemora present with five apical lobules ( Xu et al., 2022: Figure 2f View FIGURE 2 ).................... Monitelcana Xu et al., 2022 View in CoL

- Mesofemora present with only two apical lobules (e.g., Figure 2A View FIGURE 2 )...............................................4

4 Protibiae present with only one apical spurs ( Poinar et al., 2007)........... Longioculus Poinar, Gorochov et Buckley, 2007 View in CoL

- Protibiae present with two apical spurs (e.g., Figure 3A View FIGURE 3 )...................................................... 5

5 Pronotum is less than half length of the body ( Kočárek, 2020: Figures 1A, 1B View FIGURE 1 ); 1A, CuPb, CuPaβ and CuA+CuPaα ending in a sclerotized nodule before posterior margin of tegmina ( Kočárek, 2020: Figures 1A View FIGURE 1 , 2C View FIGURE 2 )............. Ellca Kočárek, 2020 View in CoL

- Pronotum more than half length of the body (e.g., Figures 2A, 2B, 2C View FIGURE 2 ); 1A, CuPb, CuPaβ and CuA+CuPaα ending at posterior margin of tegmina, without sclerotized nodule ( Figures 3C, 3D View FIGURE 3 )...................... .. Longipectus Yu et Liu , gen. nov.

6 Leaf-like metatibial dorsal spurs narrow ( Heads et al., 2018: Figures 1 View FIGURE 1 , 2 View FIGURE 2 ).......... Elcanonympha Heads et Thomas, 2018 View in CoL

- Leaf-like metatibial dorsal spurs wide (e.g., Figures 5A, 5B, 5C, 5D View FIGURE 5 )............................................ 7

7 RA never branched terminally or terminated into less than three branches or cross-veins in pterostigma area (e.g., Schall et al., 2024: Figure 4A View FIGURE 4 )..................................................................................... 8

- RA terminated into more than three branches or cross-veins in pterostigma area ( Gu et al., 2020: Figure 3D View FIGURE 3 )............. 9

8 Tegmina without dark round spots or area ( Schall et al., 2024: Figure 4A View FIGURE 4 ).. Paraxelcana Schall, Kotthof et Husemann, 2023 View in CoL

- Tegmina with dark round spots and area ( Schall et al., 2024: Figure 6A)..... Letoelcana Schall, Kotthof et Husemann, 2023 View in CoL

9 Head not or feebly elongated ( Ren et al., 1998: Figure 1 View FIGURE 1 )..................................................... 10

- Head strongly elongated ( Zhou et al., 2022: Figures 2B, 2C View FIGURE 2 )............................ Panorpidium Westwood, 1854 View in CoL

10 Matatibiae covered with denticles at base ( Hu and He, 2023: Figures 2C, 2D View FIGURE 2 )............. Probaisselcana Gorochov, 1989 View in CoL

- Matatibiae never covered with denticles at base ( Uchida, 2022: Figures 6A, 6B)...................................11

11 Tegmina with the area between ScP and RA wide ( Uchida, 2022: Figures 6C, 6D); M branched into MA and MP between ScA and ScP ( Uchida, 2022: Figures 6C, 6D)................................................. Caelielca Uchida, 2022 View in CoL

- Tegmina with the area between ScP and RA narrow ( Uchida, 2022: Figures 6C, 6D); M branched into MA and MP before ScA end ( Uchida, 2022: Figures 3C, 3D View FIGURE 3 ).................................................. Hukawnelca Uchida, 2022 View in CoL