Salmonflies
Pteronarcys californica
The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
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With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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Specific collection sites for Athericidae
Specific collection sites for Athericidae
The specific collection location data from this map were pulled from the Global Biodiversity Information Facility (GBIF) website under the Creative Commons license. Data there come from a variety of sources, some of which are populated by hobbyists. Both the precision of the location and accuracy of the identification could be low. This map is not an authoritative scientific source, nor an exhaustive list of everwhere this taxon is found, but it should be good enough for anglers. Click each marker on the map for more information about that report, including a link to more details on GBIF.