alternative definition added almost 15 years ago by Istvan Miko
The thickened, currogated posterior edge of the articular membrane of the wing base, continuous with the posterior marginal fold of the alinotum.
Reference: Snodgrass, R. E. 1935. Principles of insect morphology. McGraw-Hill Book Co., Inc., New York & London 667 pp.
Cross reference:
None provided.