Hatch Chart

Photo Common Name Scientific Name Dates Location Hook size
Salmonfly Pteronarcys californica May-Jun Riverside-Ashton, Box Cyn., Coffeepot Rapids 4-6
Golden Stone Calineuria spp. Hesperoperia spp. Jun-Jul Riverside-Ashton, Box Cyn., Coffeepot Rapids 8-10
Yellow Sally Isoperia & Suwallia pallidula Jul-Aug Entire River 10-16
Caddis Order: Trichoptera many different genera Jun-Aug entire river 12-20
Pale Morning Dun Drunella infrequens, inermis, lacustris Jun-Aug Harriman, Last Chance, upper river 16-20
Mahogany Dun Paralepto-phlebia bicornuta Sep Harriman 14-18
Brown Drake Ephemera simulans late Jun-early Jul Harriman 8-10
Gray Drake Siphlonurus occidentalis June-July Lower river 12
Green Drake Drunella grandis late Jun Harriman, Last Chance 10-12
Speckled Spinner Calibaetis spp. Jul-Aug Harriman, upper river 14-16
Blue-Winged Olive Baetis tricaudatus Oct-Nov, Feb-Apr entire river 16-18
Flav Drunella flavilinea Jul Box Canyon-Riverside, upper river 14-16
Tiny Blue-Winged Olive Pseudocloeon edmundsi Jul-Oct Harriman, lower river 22-24
Tiny Blue Quill Baetis sp. Jun-Oct entire river 20-22
Midge Diptera: Chironomidae All year entire river 3/16"-3/8"
Trico Tricory-thodes minutus Aug Harriman 20-25
Dragonfly Order: Odonata      
Damselfly Order: Odonata      
Terrestrials (Carpenter Ant) Camponotus sp. Jul-Sep Harriman, lower river 12-18 /8-10
Terrestrials (Flying Ant) Camponotus sp. Jul-Sep Harriman, lower river 12-18 /8-10
Terrestrials (Beetles) Eusattus muricatus Jul-Sep Harriman, lower river 12-18 /8-10
Terrestrials (Grasshoppers) Caelifera in the order Orthoptera Jul-Sep Harriman, lower river 12-18 /8-10
Other (Leeches, Sculpins)        
Sowbug Order: Isopoda