Delaware River

 

Hatch Guide: Delaware River - Eastern Pennsylvania

 

Hatch Timing    Scientific Name Common Name Hook Size
Apl 10-Aug 30 Genus Chimarra Little Black Sedge (Caddis) 16-18
Apl 15-May 15  Epeorus pleuralis Quill Gordon 12-14 
Apl 15-May 30 Baetis vegans Blue Winged Olive (BWO) 16-20 
Apl 24-May 24 Paraleptophlebia adoptive Blue Quill/Mahogany Drake  16-18
Apl 24-Jun 30 Pteronarcys dorsata Giant Dark Stone (Salmon Fly) 4-8
Apl 28-May 18 Ephemerella subvaria Henderickson 14-16
May 10-Aug 1 Genus Brachycentrus Grannon (Tube Case Maker) 14-16 
May 15-Jun 15 Stenonema fuscum Gray Fox 12-14
May 21-Jun 21 Ephemerella rotunda Dark Hendrickson/Red Quill  14-16 
May 24-Jun 30 Stenonema vicarium  March Brown  10-12 
May 28-Jun 24 Ephemerella dorothea  Sulphur 18-20 
May 28-Jun 15 Ephemera guttulata Green Drake 10-12
May 28-Jun 15 Ephemera simulans Brown Drake 10-12
Jun 1-Aug 31 Hydropsyche morosa Spotted Sedge 10-16
Jun 1-Jul 1 Epeorus vitreus  Sulphur  16-18
Jun 10-Jul 4  Ephemerella cornuta Light Hendrickson 14-18
Jun 10-Jul 15 Ephemerella attenuata Blue Winged Olive (BWO) 16-18 
Jun 10-Jul 10 Isonychia bicolor Slate Drake/Mohogany Dun  14-16
Jun 21-Aug 15 Stenonema ithaca Eastern Light Cahill 14-16
Jul 10-Oct 10 Heptagenia hebe Little Yellow Quill  14-18 
Jul 21-Jul 24 Anthopotamus distinctus Golden Drake  8-10 
Aug 1- Sep 30  Tricorythodes stygiatus   Trico   22-26 
Aug 15-Sep 30 Ephoron leukon  White Fly (White Drake)  12-14 
Sep 24-Oct 31 Pseudocleon anoka  Tiny Blue Winged Olive  24-28
       
Terrestrials       
       
Jun 1-Aug 30  Family Formicidae  Flying Ant  14-16 
Jul 20-Sep 30 Family Tettigoniidae Grasshoppers 8-12