Heterocloeon curiosum
(McDunnough, 1923)
curious small minnow mayfly
Heterocloeon curiosum is a small minnow mayfly in the Baetidae, native to North America. It has been studied in Virginia river systems, where it demonstrates with two summer . construction with surface release can significantly alter its timing, larval , and through thermal regime changes.
Pronunciation
How to pronounce Heterocloeon curiosum: //ˌhɛt.ə.roʊˈkloʊ.iːˌɒn kjʊəˈriː.oʊ.səm//
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Habitat
Flowing freshwater streams and rivers. have been documented in both free-flowing rivers and downstream of surface-release , though with reduced success in the latter due to altered thermal regimes and disturbance.
Distribution
North America (Nearctic region). Documented in Virginia, U.S.A., specifically in the North Anna River and South Anna River systems.
Seasonality
with two summer . timing varies with thermal conditions; in -influenced systems, second generation emergence may be delayed by approximately one month due to delayed seasonal cooling.
Life Cycle
(two per year). Passes through 10 larval instars (range 9–12). Probable in the stage.
Ecological Role
Benthic macroinvertebrate; serves as a component of stream . Larval and appear sensitive indicators of thermal alteration from management.
Human Relevance
Used as a study organism for assessing impacts of construction and surface-release water management on aquatic .