Sulphur Dun

Ephemerella invaria

Tsalia berneri

Tsalia berneri

Dark Hendrickson

Ephemerella subvaria

Great Red Quill

Timpanoga hecuba

tapered spiny crawler mayfly

Attenella attenuata

Western Green Drake

Drunella doddsii

Flav

Drunella flavilinea

Western Green Drake

Drunella grandis

Ephemerella aurivillii

Ephemerella aurivillii

Pale Dun

Ephemerella dorothea

Pale Morning Dun

Ephemerella excrucians

Little Dark Hendrickson

Ephemerella needhami

spot-bellied spiny crawler mayfly

Serratella serratoides

Uracanthella rufa

Uracanthella rufa

Blue-winged Olive

Serratella ignita