Figure 6

Morphological changes of the compound eyes during F−0 instar in Gomphidae, Petaluridae, Chlorogomphidae, Cordulegastridae, Macromiidae, Corduliidae, and Epiophlebiidae species. (A–U) Dorsal views of the heads. All scale bars show 2 mm. Species and family names are provided on the left side. The number shown on the lower left of each image indicates the number of days from the day of ecdysis or collection. (A, D, G, J, M, S) The first day of starting photographing. (P) The first day of stage 1. (B, E, H, K, N, Q, T) The first day of stage 2. (C, F, I, L, O, R) The first day of stage 3. (U) The day before adult emergence.