Summer Hatch Chart for the Firehole River, Yellowstone Park

..Little Blue-winged
..Olives Acentrella,
..Diphetor, Plauditus

..Blue-Winged Olives
..Baetis sp,

..Green Sedges
..Rhyacophila

..Spotted Sedges
....Ceratopsyche sp

..Little Sister Caddis
...Cheumatopsyche s

..PMDs
..Ephemerella sp

..Yellow Sallies
.. Isoperla sp
..
..White Miller
..Nectopsyche sp

..Green Drakes
..Drunella sp

..Golden Stoneflies
..Hesperoperla
..pacifica

...Speckled Peter
.. Helicopsyche borealis
..
..Pink Ladies
..Epeorus albertae
..
..Brown Drakes
..Ephemera simulans
..
..March Browns
..Rhithrogena sp

..Salmonflies
..Pteronarcys calif
.
..LIttle Black Caddis
..Brachycentrus sp

..Midges
..Chironomidae

..Grasshoppers

..Ants

..Beetles

..Little Black Short-
..horned sedges
..Glossosoma mt
..
..Longhorn Sedge
..Oecetis sp

..Little Brown Caddis
..Lepidostoma pluviale sp

..Mahogany Duns
..Paraleptophlebia s

..Flavs
..Ephemerella flavili

..