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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.

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.
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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Caddisfly Species Ceraclea wetzeli (Scaly-Wing Sedges)

This species was discovered in the first half of the 20th century by an a Pennsylvania angling author, Charles Wetzel, who was also the source of the Isonychia bicolor common name "White-Gloved Howdy." He sent a specimen to an entomologist who named the new species after him.

Where & when

Time of year : Late June

In 8 records from GBIF, adults of this species have been collected during June (75%) and July (25%).

In 2 records from GBIF, this species has been collected at elevations of 390 and 1138 ft.

Species Range

Start a Discussion of Ceraclea wetzeli

References

Caddisfly Species Ceraclea wetzeli (Scaly-Wing Sedges)

Taxonomy
Species Range
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