Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
Cubitus: The cubitus (denoted Cu) is the fifth major longitudinal wing vein in insects, located behind the media. In caddisflies, its anterior branch Cu1 arises from a point on the media near or at its base, and the posterior branch Cu2 arises separately from the base of the wing. The anterior branch Cu1 is subdivided into two branches Cu1a and Cu1b, while the posterior Cu2 is unbranched. In the forewing, the tip of Cu2 curves backward to the wing edge at a slightly inflexed point called the arculus.
These other words reference the same concept: vein Cu, Cu vein, Cu, vein Cu1, Cu1 vein, Cu1, vein Cu2, Cu2 vein, Cu2, vein Cu1a, Cu1a vein, Cu1a, vein Cu1b, Cu1b vein, Cu1b.
