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Insect activity

Hatch Intelligence

17 species tracked · 11 active in Jun

Mayflies

Hendrickson

Ephemerella subvaria

50–58°F Afternoon Hook: 12/14

Active on 2 streams

Blue Winged Olive

Baetis spp.

46–56°F All day Hook: 16/18/20

March Brown

Maccaffertium vicarium

54–62°F Midday Hook: 10/12

Active on 6 streams

Big Sulphur

Ephemerella invaria

56–64°F Evening Hook: 14/16

Active on 6 streams

Little Summer Sulphur

Ephemerella dorothea

58–68°F Evening Hook: 16/18/20

Active on 6 streams

Green Drake

Ephemera guttulata

58–66°F Evening Hook: 8/10

Active on 6 streams

Pale Morning Dun

Ephemerella excrucians

58–66°F Morning Hook: 16/18

Active on 6 streams

Quill Gordon

Epeorus pleuralis

48–54°F Afternoon Hook: 12/14

Isonychia / Slate Drake

Isonychia bicolor

60–70°F Evening Hook: 10/12

Active on 8 streams

Caddisflies

Tan Caddis

Hydropsyche spp.

54–70°F Evening Hook: 14/16

Active on 11 streams

Olive Caddis

Rhyacophila spp.

50–65°F Afternoon Hook: 14/16

Active on 7 streams

Grannom / Apple Caddis

Brachycentrus spp.

48–58°F Afternoon Hook: 14/16

Active on 2 streams

October Caddis

Dicosmoecus spp.

45–55°F Afternoon Hook: 6/8/10

Stoneflies

Yellow Sally

Isoperla spp.

56–68°F Morning Hook: 14/16

Active on 8 streams

Early Brown Stonefly

Strophopteryx fasciata

40–50°F Afternoon Hook: 12/14

Active on 1 stream

Golden Stonefly

Perlidae spp.

55–65°F All day Hook: 8/10

Active on 7 streams

Midges

Midge

Chironomidae

35–70°F All day Hook: 18/20/22/24

Active on 12 streams