Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana

Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

I like this one. Glacial river, taiga, tundra, and the perpetual ice cover of a massive high ridge dozens of miles away in the Wrangell Mountains.

From the Copper River in Alaska

Stream photos

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Ephemerella mucronata Mayfly Nymph Ephemerella mucronata Mayfly Nymph

Dorsal view of a Ephemerella mucronata (Ephemerellidae) Mayfly Nymph from the Yakima River in Washington

This is an interesting one. Following the keys in Merritt R.W., Cummins, K.W., and Berg, M.B. (2019) and Jacobus et al. (2014), it keys clearly to Ephemerella. Jacobus et al provide a key to species, but some of the characteristics are tricky to interpret without illustrations. If I didn't make any mistakes, this one keys to Ephemerella mucronata, which has not previously been reported any closer to here than Montana and Alberta. The main character seems to fit well: "Abdominal terga with prominent, paired, subparallel, spiculate ridges." Several illustrations or descriptions of this holarctic species from the US and Europe seem to match, including the body length, tarsal claws and denticles, labial palp, and gill shapes. These sources include including Richard Allen's original description of this species in North America under the now-defunct name E. moffatae in Allen RK (1977) and the figures in this description of the species in Italy.

17 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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need a good pattern

Male Ephemerella invaria (Sulphur) Mayfly Dun

6 Pictures

Artistic view of a Male Ephemerella invaria (Ephemerellidae) (Sulphur) Mayfly Dun from the Little Juniata River in Pennsylvania

Collected May 24, 2007 from the Little Juniata River in Pennsylvania

Added by Troutnut on June 4, 2007

Collected May 24, 2007 from the Little Juniata River in Pennsylvania and added by Troutnut on June 4, 2007

Anttam
eastern Pa

Posts: 3

Anttam on May 19, 2008May 19th, 2008, 2:10 pm EDT

any cdc patterns you nuts know of for Sulfpurs?
looking for a site with instructions or any help

Phishheaduj
north west new jersey/pa

Posts: 4

Phishheaduj on Jan 7, 2009January 7th, 2009, 4:22 am EST

hey eastern pa. if your looking to tie a sulpher with CDC just tie in a cdc parachute instead of the Palmer hackle that most patterns use. check out the book tying small flies, and the site flytyingworld.com, also during a sulpher hatch, you will clean up with a CDC emerger with a CDC nymph. but if your all about drys then go with the first pattern, use a size 18 hook, 16 will probably be to large and will be rejected, also look at very old patterns, in the hub bub of trying to improve things, much has been forgotten.

always learning