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Updates from June 5, 2005

Photos by Troutnut from the Marengo River and Twentymile Creek in Wisconsin

A storm recedes over the boggy headwaters of a nice trout stream.  I haven't seen any trout in this stretch, but it's a good place to collect burrowing mayfly nymphs. From the Marengo River in Wisconsin.
A storm recedes over the boggy headwaters of a nice trout stream. I haven't seen any trout in this stretch, but it's a good place to collect burrowing mayfly nymphs.
Date TakenJun 5, 2005
Date AddedFeb 8, 2006
AuthorTroutnut
 From the Marengo River in Wisconsin.
Date TakenJun 5, 2005
Date AddedFeb 8, 2006
AuthorTroutnut
I found this big snapping turtle crossing the road next to the headwaters of a tiny brook trout stream I've never fished. From Road along Twentymile Creek in Wisconsin.
I found this big snapping turtle crossing the road next to the headwaters of a tiny brook trout stream I've never fished.
Date TakenJun 5, 2005
Date AddedFeb 8, 2006
AuthorTroutnut
 From Twentymile Creek in Wisconsin.
Date TakenJun 5, 2005
Date AddedFeb 8, 2006
AuthorTroutnut

Closeup insects by Troutnut and Bnewell from the Long Lake Branch of the White River, the Marengo River, the Teal River, Eighteenmile Creek, the Namekagon River, and Georgetown Lake in Wisconsin and Montana

Rhyacophila fuscula (Green Sedge) Caddisfly LarvaRhyacophila fuscula (Green Sedge) Caddisfly Larva View 11 PicturesI collected this larva and several like it from the same stream and on the same day as this pupa. I suspect they're the same species.
Collected June 5, 2005 from the Long Lake Branch of the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006
Rhyacophila (Green Sedges) Caddisfly PupaRhyacophila (Green Sedges) Caddisfly Pupa View 11 PicturesI collected this pupa and several like it from the same stream and on the same day as this larva. I suspect they're the same species. Every pupa I collected was in a brown casing like the one shown in one of the pictures below. I cut this pupa out of its case after a picture so you can see more details. It is close to but not fully developed.
Collected June 5, 2005 from the Long Lake Branch of the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006
Heptagenia pulla (Golden Dun) Mayfly NymphHeptagenia pulla (Golden Dun) Mayfly Nymph View 5 PicturesI used a microscope to positively identify this nymph as Heptagenia pulla. (Edit six years later: I wish I had explained why I was positive about this. It may have been based on color patterns in an angling text, which are not especially reliable for species ID anymore.)
Collected June 5, 2005 from the Long Lake Branch of the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006
Caenis (Angler's Curses) Mayfly NymphCaenis (Angler's Curses) Mayfly Nymph View 3 Pictures
Collected June 5, 2005 from the Marengo River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006
Rhithrogena impersonata (Dark Red Quill) Mayfly NymphRhithrogena impersonata (Dark Red Quill) Mayfly Nymph View 8 PicturesThis specimen shows one of two distinct color types of Rhithrogena impersonata nymphs. This type is very reddish, especially in the gills, and it was formerly in its own species called Rhithrogena sanguinea.
Collected June 5, 2005 from the Long Lake Branch of the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 24, 2006
Ephemerella needhami (Little Dark Hendrickson) Mayfly NymphEphemerella needhami (Little Dark Hendrickson) Mayfly Nymph View 5 PicturesThis specimen strikingly resembles another specimen from about 1300 miles away in the Catskills, which I tentatively called Ephemerella aurivillii. This one has much more prominent abdominal tubercles (
A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled.  They are especially large in this species.
A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Tubercle: Various peculiar little bumps or projections on an insect. Their character is important for the identification of many kinds of insects, such as the nymphs of Ephemerellidae mayflies.
)
. It may be that they're both the same species and I don't have my identifications straight.
Collected June 5, 2005 from the Long Lake Branch of the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 24, 2006
Hexagenia limbata (Hex) Mayfly NymphHexagenia limbata (Hex) Mayfly Nymph View 4 Pictures
Collected June 5, 2005 from the Marengo River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006
Female Attenella attenuata (Small Eastern Blue-Winged Olive) Mayfly DunFemale Attenella attenuata (Small Eastern Blue-Winged Olive) Mayfly Dun View 4 PicturesThis dun was badly damaged in transport and all its legs fell off, but I photographed it anyway because I wasn't sure I would fine more and it's an interesting species. Luckily I collected better specimens a few days later.
Collected June 5, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006
Aeshnidae Dragonfly NymphAeshnidae  Dragonfly Nymph View 1 Pictures
Collected June 5, 2005 from Georgetown Lake in Montana
Added to Troutnut.com by Bnewell on June 27, 2011
Libellulidae Dragonfly NymphLibellulidae  Dragonfly Nymph View 1 Pictures
Collected June 5, 2005 from Georgetown Lake in Montana
Added to Troutnut.com by Bnewell on June 27, 2011

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