Here is the fly pattern sheet for the Emerger Ida May, developed by Charles Brooks.

Brooks' Emerger Ida May | www.johnkreft.com

Materials

Hook:

Tail:

Rib

Overrib:

Body:

Hackle:

Thread:

Size 10, 1XL, light wire

Very webby grizzly dyed dark green

Peacock herl

Fine gold wire

Furry Foam, beige, split or separated

Webby grizzly dyed dark green

6/0 black

The body calls for a strip of Furry Foam, which I show below. Use a green Pantene marker with a black marker over the top of green to color the tan Furry Foam body. This process makes a multi-color body.

Furry Foam | www.johnkreft.com

Fly pattern from Charles Brooks’ book entitled The Henry’s Fork (1986) in Appendix C, page 201.