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.

Stream photos

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Amphizoa Beetle Larva Amphizoa Beetle Larva

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington

This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).

5 Recently Added Photos

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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Updates from July 19, 2010

Closeup insects by Bnewell from the Vermillion River and Miscellaneous Montana in Montana

Caudatella edmundsi Mayfly Nymph

1 Picture

Caudatella edmundsi (Ephemerellidae) Mayfly Nymph from the Vermillion River in Montana

This species was previously know only from the nymph. I reared nymphs and we described the adults and eggs of this interesting species.

Collected July 19, 2010 from the Vermillion River in Montana

Added by Bnewell on June 26, 2011

Collected July 19, 2010 from the Vermillion River in Montana and added by Bnewell on June 26, 2011

Arachnida (Mites and Spiders) Arthropod Adult

2 Pictures

Water mites are common in lakes and ponds but because they are so small they do not get noticed.These specimens are from temporary wetlands in Glacier National Park.

Collected July 19, 2010 from Various wetlands in Montana

Added by Bnewell on June 26, 2011

Collected July 19, 2010 from Various wetlands in Montana and added by Bnewell on June 26, 2011