Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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Insect Order Coleoptera (Beetles)
There are about 5,000 species of aquatic beetles, and I won't be including them all on this site. I've also only included certain aquatic beetles and terrestrial families which I've found frequently on trout streams.
The common terrestrial forms are especially important during the late summer when they get knocked into the stream in any number of ways. As far as I know there are no specific life cycle habits which toss these insects into the water in great numbers; they just become important because there are so many of them around incidentally.
Trout generally relish beetles and their imitations make great searching patterns.
The common terrestrial forms are especially important during the late summer when they get knocked into the stream in any number of ways. As far as I know there are no specific life cycle habits which toss these insects into the water in great numbers; they just become important because there are so many of them around incidentally.
Trout generally relish beetles and their imitations make great searching patterns.
Specimens of Beetles:
5 Larvae
Every picture of this Psephenidae larva was taken with my old C740UZ through a microscope.
3 Adults
This is an iridescent green terrestrial beetle. They're common in northern Wisconsin's forests during the middle of summer, and I found them on the water's surface more than any other terrestrial insect. I saw the trout take a few and caught some trout on an imitation.
You wouldn't know to look at it, but this is an aquatic beetle and it's in water in the photographs.
This is a water beetle. It is the hardest object in the world to pick up with tweezers. The second hardest is Mount Everest.
1 Streamside Picture of Beetles:
Many beetles of this species were jumping around the rocks like popcorn on a mid-April afternoon. I'm sure they end up in the water for the trout at times.
In this picture: Insect Order Coleoptera (Beetles).
1 Underwater Picture of Beetles:
Recent Discussions of Coleoptera
Family
1 replies
Posted by DMM on Nov 26, 2006 in the family Hydrophilidae
Last reply on Nov 29, 2006 by Troutnut
I noticed the ending of the family is reversed--should be -ae.
Comment on Coleoptera:
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- Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.
Taxonomy
Kingdom
Animalia (Animals)
» Phylum
Arthropoda (Arthropods)
» Class
Insecta (Insects)
» Order Coleoptera (Beetles)
| Family in Coleoptera | ||
|---|---|---|
| CurculionidaeWeevils | 1 | 3 |
| ElmidaeRiffle Beetles | 1 | 14 |
| HydrophilidaeGiant Water Scavenger Beetles | 1 | 2 |
| PsephenidaeWater Pennies | 3 | 12 |
27 families (Amphizoidae, Anthicidae, Carabidae, Chrysomelidae, Dryopidae, Dytiscidae, Georyssidae, Gyrinidae, Haliplidae, Heteroceridae, Hydraenidae, Hydroscaphidae, Hygrobiidae, Lampyridae, Limnichidae, Lutrochidae, Melyridae, Microsporidae, Noteridae, Ptiliidae, Ptilodactylidae, Salpingidae, Scirtidae, Staphylinidae, Staphylinidae, Tenebrionidae, and Torridinicolidae) aren't included.