The Fly Fishers of Davis club invites the public to hear from Jon Baiocchi, who will discuss everything a fly angler needs to know about the famed skwala stonefly hatch on the Yuba River — arguably the best winter dry fly fishery in California — at this month’s meeting, set for 7:30 p.m. Tuesday, Jan. 26, via Zoom. “Skwalas on the Yuba” covers the life cycle of this unique stonefly including identification characteristics, habitat, behavior and the importance of this big meal for the resident wild trout and steelhead. Also covered in the program is weather and timing, the other game — mayflies, trout behavior, tactics and rigging for nymphing and dry flies, water to target, and the go-to flies for nymphs and dries.