Charlie Meck's Fly Fishing Small Streams
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© 2006 E. P. Macri Jr.
Hatch Chart
|
Imitation
|
Copies
|
Dates
|
Time
|
Size
|
Location
|
Western March Brown
|
Rhithrogena morrisoni
|
Mar-Jun
|
P.M.
|
14
|
E
|
Little Black Stonefly
|
Capnia vernalis
|
Mar.
|
A.M./P.M.
|
18
|
E,M,
|
Little Blue Winged Olive
Dun
|
Baetis tricaudatus
|
April*
|
A.M./P.M.
|
20
|
All
|
Blue Quill
|
Paraleptophlebia
adoptiva
|
Mid April-Mid May
|
A.M./P.M.
|
18
|
E,M
|
Quill Gordon
|
Eperous pleuralis
|
Mid April-Mid May
|
P.M.
|
14
|
E
|
Hendrick- son
|
Ephemerella subvaria
|
Mid April-Mid May
|
P.M.
|
14
|
E.M
|
Grannom
|
Brachycentrus sp.
|
Mid-late April
|
P.M
|
14-16
|
E.M
|
Sulphur Dun
|
Ephemerella
rotunda/invaria
|
Mid May-late June
|
Even.
|
14-16
|
E.M.
|
March Brown
|
Stenonema vicarium
|
Mid May-Mid June
|
A.M./P.M.
|
12
|
E.M.
|
Green Drake
|
Ephemera guttulata
|
Mid May-Mid June
|
P.M. Even*.
|
8
|
E.M.
|
Blue Winged Olive
|
Drunella cornuta
|
Mid May-Late June
|
A.M. S#
|
14
|
E
|
Dark Green Drake
|
Litobranchia recurvata
|
Mid May-Mid June
|
A.M./Even *
|
8
|
E.M.
|
Light Cahill
|
Stenacron
interpunctatum*
|
Mid-May Late June
|
P.M./Even
|
14
|
E.M.
|
Pale Even Dun
|
Ephemerella dorothea
|
Late May Mid July
|
Even
|
18
|
E.M.
|
Little Green Stonefly
|
Isoperla imbecilla
|
June-Mid July
|
Day
|
16
|
E.M.
|
Giant Stonefly
|
Pteronarcys dorsata
|
June
|
Even.
|
6
|
E.M.
|
Slate Drake
|
Isonychia sp*
|
June-Oct.
|
Even.
|
12-14
|
E
|
Yellow Stonefly
|
Isoperla bilineata
|
June-late July
|
Day
|
14
|
E.
|
Blue Quill
|
Paraleptophlebia
memorialis
|
July
|
A.M.
|
18
|
W
|
Trico
|
Tricorythodes*
|
Mid July- Mid Sept.
|
A.M.
|
24-28
|
All
|
Blue Quill
|
Paraleptophlebia gutta
|
Mid June-Mid Aug.
|
A.M.
|
18
|
All
|
|
Notes: Litle Blue Winged Olive may have two to
three broods on some streams; Grannon (Brachycentrus sp) refers to many different species all called the
Grannom. S# refers to a sporadic emergence. Light Cahill (Stenacron sp) inludes the species
canadense. Slate Drake (Isonychia sp.) inlcudes many species. The Trico (Trycorythodes sp.) includes
atratus, stygiatus, and minutus. All emergence times are approximate and depend on local
conditions. Size is also variable.
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