Baetis intercalaris
McDunnough, 1921
Small Eastern Blue-winged Olive
Baetis intercalaris is a small minnow mayfly in the Baetidae, distributed across the southern half of Canada and the continental United States. Research has demonstrated that its distribution and abundance in stream are significantly influenced by substrate rock size, with both abundance and increasing with larger rock particles. The has been studied in relation to its microhabitat preferences on rocky stream beds.



Pronunciation
How to pronounce Baetis intercalaris: /ˈbaɪtɪs ˌɪntərkəˈlɛərɪs/
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Images
Habitat
Rocky stream beds; distribution and abundance are influenced by rock size, with higher abundance and on larger rock substrates (160–190 mm diameter) compared to smaller particles (30–70 mm)
Distribution
Southern half of Canada and the continental United States; Nearctic region
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
- Dyddiaduron pryf y cerrig ~ blog rhan 2 - Buglife Blog - Buglife
- The Stonefly Diaries ~ a blog Part 2 - Buglife Blog - Buglife
- The effect of rock size upon the distribution of species of Orthocladiinae (Chironomidae: Diptera) and Baetis intercalaris McDunnough (Baetidae: Ephemeroptera)