John Day Caddis A William Lovelace Fly Name John Day Caddis Category Steelhead Hook Mustad 3406 #8 Thread Black Monocord Body Beaver Dubbing and Fluorescent Green Floss Head Ostrich Herl John Day Caddis comes from the bench of Samonfly.Net Contributing Fly Tyer William Lovelace. Bill's notes: "This was tied to imitate the cased caddis found in the stomach of a John Day River Steelhead." Read more about William Lovelace and see more of his flies at The Flies of William Lovelace.		.