Little Slate-Winged Olive Quills
Like most common names, "Little Slate-Winged Olive Quill" can refer to more than one taxon. For more detail click through to the scientific names.
These are very rarely called Little Slate-Winged Olive Quills.
This tiny hind-wingless Midwestern and Western species can produce excellent hatches because it is so extremely abundant. It appears in previous angling literature under the former names
Pseudocloeon anoka in the Midwest and
Pseudocloeon edmundsi for its western
synonym (Synonym: A former name of a taxon, usually a species. Entomologists frequently discover that two insects originally described as different species are one in the same, and they drop one of the names. The dropped name is said to be a synonym of the remaining name. These changes take a while to trickle into the common knowledge of anglers; for example, Baetis vagans is now a synonym of Baetis tricaudatus.). Its bright green duns are unmistakable. In the West they can also be an equally unmistakable bright almost fluorescent chartreuse, especially as nymphs. They are very common in the Northwest and Rocky Mountain states, with their population densities giving way to the similarly tiny and hind-wingless (though more somber colored)
Acentrella species in Southern Oregon, California and the Southwest.
Iswaeon anoka was first brought to the attention of the angling community (as
Pseudocloeon anoka) by famous angling author and columnist Joe Brooks. Back in the late 60's he wrote an article for Outdoor Life magazine extolling the work of Doug Swisher and Carl Richards in their forthcoming and groundbreaking book,
Selective Trout. This species was featured as the model for their now famous version of the "No-Hackle" dry fly and imitative parachute patterns, sparking a revolution in fly design for hyper-selective trout. The rest as they say, is history...
These are very rarely called Little Slate-Winged Olive Quills.
This species produces very strong hatches on fertile Western spring creeks. They are extremely small mayflies but may be extremely numerous.