**Mayfly Species Baetis intercalaris (Small Eastern Blue-Winged Olive)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Baetidae (Blue-Winged Olives)

» Genus Baetis (Blue-Winged Olives)

» Species intercalaris (Small Eastern Blue-Winged Olive)

Common Names

Match	Common Name
	Small Eastern Blue-Winged Olive
	Tiny Blue-Winged Olive
	BWO
	Slate-Winged Olive
	Little Slate-Winged Brown Quill
	Rusty Spinner
	Little Blue-Winged Olive
	Slate-Winged Brown Quill
	Gray-Winged Brown Quill

Where & When

Regions: East, Midwest

Time Of Year (?): Mid-May through early June

This species makes its appearance a few weeks after the first brood of Baetis tricaudatus. It is less important because many larger mayflies are on the water at that time. There are good hatches in both the East and the Midwest, and they may make trout selective.

Nymph Biology

Current Speed: Any

Substrate: A variety: rocks, gravel, vegetation

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**Mayfly Species Baetis intercalaris (Small Eastern Blue-Winged Olive)**

Where & When

Nymph Biology

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