This is a pattern that can be used for Grayling.

Hook: Size 10-12 Scud Hook

Bead: 4mm tungsten bead

Collar: Arizona Semi Seal Dubbing Dark Olive

Body: Sow Bug Hares ear dubbing mixed with a little Arizona Semi Seal

Shellback: Clear Scud back

Thread: 8/0 Black Uni

Rib: Black stretch floss (any wire will work as well)

Grayling also love Pink as well as Hotspots.