Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
Stonefly Species Leuctra variabilis (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: Leuctra Schusteri, A New Stonefly Species (Plecoptera: Leuctridae) Of The Leuctra Tenuis (Pictet) Group From The Southeastern Usa
Male. The 7 th abdominal dorsal process shown herein from eastern Tennessee is symmetrically trapezoidal with no appearance of lateral lobes (Fig. 48). The specimens examined from eastern Kentucky have small, laterally-directed spurs, yet still lack the appearance of lateral lobes. The specilla are broad basally, tapering slightly and not recurved; specilla mostly smooth in appearance, bearing shallow pits along the distal outer margin and very few raised tubercles (Figs. 49 - 52). The subanal lobes are narrow throughout length, gently recurved anteriorly, and ca. 90 % the length of the inner lobes (Figs. 49, 51 - 52).
Start a Discussion of Leuctra variabilis
Stonefly Species Leuctra variabilis (Tiny Winter Blacks)
Species Range
Common Names
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Hanson, J.F. (1941) Studies on the Plecoptera of North America, II. Bulletin of the Brooklyn Entomological Society 36, 57–66.