Diagram of insect wing venation. Redrawn with modifications from Chapman (1989, fig. 9)1.
The veins are named according to system of Comstock and Needham (1898-1899)2 modified by Wootton (1979)3.
On the right side of the diagram there is a section across the wing. The section was made along the line marked with arrows. It shows, in exaggerated way, corrugation of the wing.

1. 1. Chapman RF. The insects: structure and function. Cambridge: Cambridge University Press; 1998.
2. 2. Comstock JH, Needham JG. "The wings of insects." American Naturalist. 1898;32:43-903.
3. 3. Wootton RJ. "Function, homology and terminology in insect wings." Systematic Entomology. 1979;4:81-93.