Hex Mayflies
Hexagenia limbata
The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
Stonefly Species Sierracapnia hornigi (Little Snowflies)
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: Sierracapnia, A New Genus Of Capniidae (Plecoptera) From Western North America
Male. Tergum 7 knob narrow and slightly notched, knob width 11 - 16 % of segment 7 width (Fig. 8). Epiproct in dorsal view increases in width between neck and anterior half; maximum width 17 - 24 % of epiproct length; maximum width occurs anterior of mid epiproct; apex rounded and with median posterior-projecting triangular lobe; dorsal membrane light colored (Figs. 5, 7). Epiproct in lateral view slightly convex dorsally, deeply keeled ventrally; maximum depth 19 - 24 % of length; maximum depth occurs anterior of mid epiproct; neck narrow (Fig. 6). Epiproct dorsolateral horns closely appressed to main dorsal surface; horn length 15 - 18 % epiproct length; horn tips extend forward to 76 - 85 % epiproct length (Fig. 7, Table 1).
Female. Subgenital plate heavily sclerotized and dark; plate covers full width of sternum 8 from posterior to anterior edge; posterior of sternum 7 sclerotized (Fig. 224, Nelson and Baumann 1989).
Start a Discussion of Sierracapnia hornigi
Stonefly Species Sierracapnia hornigi (Little Snowflies)
Species Range
Common Names
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Baumann, R.W. & Sheldon, A.L. (1984) Capnia hornigi, a new winter stonefly from the western Great Basin (Plecoptera: Capniidae). The Pan-Pacific Entomologist 60, 30–32.