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Hatch Chart

Peak Flies - May

Hatch Chart - Yearly

  •  Peak
  •  Major
  •  Minor
  •  Dormant
Fly Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Gray_Drake_Spinner.jpg (Siphlonurus occidentalis)

Gray Drake
(Siphlonurus occidentalis)

            
Pink_Albert_II.jpg (Epeorus Alberte)

Pink Albert
(Epeorus Alberte)

            
Mahogany_Dun_Female.jpg (Paraleptophlebia bicornuta)

Mahogany Dun
(Paraleptophlebia bicornuta)

            
Trico_male_spent_spinner.jpg (Trycorythodes minutus)

Trico
(Trycorythodes minutus)

            
Callibaetis_Female_Spinner.jpg (Callibaetis ferrugineus)

Speckled Spinner
(Callibaetis ferrugineus)

            
Lepidostoma_Adult.jpg (Several genera & species)

Other Caddis Flies
(Several genera & species)

            
Flav_Female.jpg (Drunella flavilinea)

Flav
(Drunella flavilinea)

            
Brown_Drake_Dun.jpg (Ephemera simulans)

Brown Drake
(Ephemera simulans)

            
Green_Drake2.jpg (Drunella grandis)

Western Green Drake
(Drunella grandis)

            
Spotted_Sedge.jpg (Hydropsyche)

Spotted Sedge Caddis
(Hydropsyche)

            
Pale_Morning_Dun_Female.jpg (Ephemerella inermis)

Pale Morning Dun
(Ephemerella inermis)

            
Little_Yellow_Sally.jpg (Isoperla, alloperla)

Small Stoneflies
(Isoperla, alloperla)

            
Golden_Stonefly_03_Adult.jpg (Acroneuria, classenia)

Golden Stonefly
(Acroneuria, classenia)

            
Salmonfly.jpg (Pteronarcys)

Salmonfly
(Pteronarcys)

            
Grannom2.jpg (Brachycentrus)

Grannom Caddis
(Brachycentrus)

            
Western_March_Brown.jpg (Rhithrogena morrisoni)

Western March Brown
(Rhithrogena morrisoni)

            
BWO_male_dun.jpg (Baetis several species)

Blue Winged Olive
(Baetis several species)

            
Midge_02_adult_male_Madison.jpg (Chironomidae)

Midge
(Chironomidae)