What is this insect wing, based on its vein pattern?
There is a way to classify insect wings: the Comstock-Needham system.
From Wikipedia:

The Comstock–Needham system is a naming system for insect wing veins, devised by John Comstock and George Needham in 1898. It was an important step in showing the homology of all insect wings. This system was based on Needham's pretracheation theory that was later discredited by Frederic Charles Fraser in 1938.

The system assigns names to the enlarged longitudinal veins of the wings and provides subnumbering for different branches of those veins. The system also names cross-veins and cells (transparent areas between veins) relative to the major longitudinal veins.
Again, according to Wikipedia:


the major longitudinal veins are named:
&gt; - costa C, meaning rib
&gt; - subcosta Sc, meaning below the rib
&gt; - radius R, in analogy with a bone in the forearm, the radius
&gt; - media M, meaning middle
&gt; - cubitus Cu, meaning elbow
&gt; - anal veins A, in reference to its posterior location


The cells are named after the vein on the anterior side