Salmonflies
Pteronarcys californica
The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Stonefly Species Soyedina washingtoni (Tiny Winter Blacks)
Species Range
Physical description
Most physical descriptions on Troutnut are direct or slightly edited quotes from the original scientific sources describing or updating the species, although there may be errors in copying them to this website. Such descriptions aren't always definitive, because species often turn out to be more variable than the original describers observed. In some cases, only a single specimen was described! However, they are useful starting points.
Description from GBIFthe Global Biodiversity Information Facility
Source: Soyedina Ricker, 1952 (Plecoptera: Nemouridae) in the eastern Nearctic: review of species concepts, proposed morphology-based species groups, and description of a new species from North Carolina
Three species are proposed for this group: Soyedina carolinensis, Soyedina merritti, and Soyedina washingtoni. In ventral aspect the epiproct dorsal sclerite is open distally, revealing a sclerotized inner member which is flared apically, directed slightly to the left, and the flange lip is approximately the same size radially (Figs. 26 – 28, 36 – 38, 44 – 46). The paired ventral sclerites are asymmetric with right member distinctly longer than left (Figs. 25 – 26, 35 – 36, 43 – 44). The paired dorsal sclerites are also asymmetric (Figs. 29 – 30, 39 – 40, 47 – 48). The outer paraproct lobes are variable between species. This is mainly an Appalachian-distributed species group (Fig. 80).
Start a Discussion of Soyedina washingtoni
Stonefly Species Soyedina washingtoni (Tiny Winter Blacks)
Species Range
Common Names
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Claassen, P.W. (1923) New species of North American Plecoptera. The Canadian Entomologist 55, 257–263, 281–292.