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 used for naming veins inside the wings of bugs was determined to be invalid less than a century after its invention.