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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington
Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Female Theliopsyche (Little Brown Sedge) Caddisfly Adult Pictures

This one has a neat iridescent sheen to its wings.

See the discussion for details on this fly's tentative ID.

Ruler view of a Female Theliopsyche (Lepidostomatidae) (Little Brown Sedge) Caddisfly Adult from Mystery Creek #42 in Pennsylvania The smallest ruler marks are 1 mm.
Dorsal view of a Female Theliopsyche (Lepidostomatidae) (Little Brown Sedge) Caddisfly Adult from Mystery Creek #42 in Pennsylvania
Ventral view of a Female Theliopsyche (Lepidostomatidae) (Little Brown Sedge) Caddisfly Adult from Mystery Creek #42 in Pennsylvania
Lateral view of a Female Theliopsyche (Lepidostomatidae) (Little Brown Sedge) Caddisfly Adult from Mystery Creek #42 in Pennsylvania
Female Theliopsyche (Lepidostomatidae) (Little Brown Sedge) Caddisfly Adult from Mystery Creek #42 in Pennsylvania
Female Theliopsyche (Lepidostomatidae) (Little Brown Sedge) Caddisfly Adult from Mystery Creek #42 in Pennsylvania

This caddisfly was collected from Mystery Creek #42 in Pennsylvania on May 28th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.

Discussions of this Adult

Chimarra
11 replies
Posted by Taxon on Jun 5, 2007
Last reply on Dec 31, 2007 by Taxon
Jason-

That would be Chimarra, most likely C. aterrima, but it could also be either C. obscura or C. socia. Based on that neat black egg mass visible in the ventral view photo, it would also appear that it's a female.

Start a Discussion of Adult

References

Female Theliopsyche (Little Brown Sedge) Caddisfly Adult Pictures

Collection details
Location: Mystery Creek #42, Pennsylvania
Date: May 28th, 2007
Added to site: June 4th, 2007
Author: Troutnut
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