A Mayfly - Acentrella turbida
The genus, Acentrella are small mayflies (blue-winged olives) that are common in medium-large cool-water systems such as the Missouri and Yellowstone Rivers, but can also appear in smaller, cold-water trout streams that have some siltation and de-watering problems, as this genera is more silt-tolerant than some other mayflies.
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
- Additional Sources of Information Related to "Insects"