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 triloba (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 bears three lobes, with the medial lobe terminating more posteriorly than the paired lateral lobes (Figs. 34 - 36). The specilla are very broad basally, scarcely recurved anteriorly (Figs. 39, 41), and bear raised tubercles distally along outer margins (Figs. 37 - 38, 40, 42). The subanal lobes are narrow throughout length, tapering and recurved anteriorly, and ca. 80 % the length of the specilla (Figs. 39, 41).
Start a Discussion of Leuctra triloba
Stonefly Species Leuctra triloba (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.