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Firehole River Hatch Chart: Spring

May June Hatch Rating
Week 4 Week 1 Week 2 Week 3
Blue-winged Olive Baetis sp ****
Little Blue-winged Olive Acentrella, Diphetor, Plauditus ***
Salmonfly Pteronarcys calif ****
Golden Stonefly Hesperoperla pacifica
Yellow Sallies Isoperal sp ***
Little Black Caddis Amer.Grannom Brachycentrus sp ****
Little Black Short Horned Sedges Glossosoma sp
May June Hatch Rating
Week 4 Week 1 Week 2 Week 3
White Miller Nectopsyche sp ****
Speckled Peter Helicopsyche borea ***
Spotted Sedges Hydropsyche sp ****
Little Sister Caddis Cheumatopsyche s
Blue Quills Paraleptophlebia sp
PMDs Ephemerella sp *****
Green Drakes Drunella sp ****
Pale Evening Duns Heptagenia s
May June Hatch Rating
Week 4 Week 1 Week 2 Week 3
Flavs Drunella flavilinea
March Browns Rhithrogena sp **
Little Yellow Sallies Perlodidae
Maghoney Duns Paraleptophebia sp **
Slate Drakes Isonychia bicolor
Midges Chironomidae ***
Grasshoppers
Crickets
Ants
Beetles

Copyright 2007 James Marsh