Clostera

1 Sculpture formed by aeropyles (Figs. 27, 28)...................................................................................2

- Sculpture formed by cells (Figs. 80, 81)........................................................................................ 3

2 Aeropyles bordered by large roller-like edges (Fig. 27). Fresh egg crimson-grey, becoming crimson-black during development............................................................................ C. albosigma curtuloides (From South Ural Region to Far East Russia (Amur, Primorye, Sahalin, Kuril Islands), Korea, Japan, China)

- Aeropyles without roller-like edges (Fig. 28). Fresh egg greenish-grey, becoming dark-raspberry with 2 grey arcuate stripes during development (Figs. 82, 83). Before caterpillar emergence egg becomes dark-grey.................. C. anastomosis (From Europe to Japan, China)

3 Sculpture with poorly expressed cells. Egg green, becoming blue-green (Fig. 84)......................................... .. C. curtula

- Sculpture with prominent cells. Egg coloration variable.......................................................................... 4

4 Egg greenish-grey becoming pinkish-red during development (Fig. 85).............................................. C. pigra

- Egg with black and grey arcuate bands (Fig. 86), becoming dark grey during development................. C. anachoreta