Waterlands
River Intelligence · Entomology

Read the Water. Match the Hatch.

Every river has an entomological fingerprint — the bugs it grows, when they hatch, and how trout eat them. Learn the bugs, cross-reference live flows, and fill your box before you go.

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Caddisfly

October Caddis

Dicosmoecus gilvipes

A giant orange sedge that ends the season with a bang. Big fish move for it — the last great dry-fly event before winter.

Order
Caddisfly
Family
Limnephilidae
Genus
Dicosmoecus
Hook
#8-10
Season · Peak Late Sep-Oct
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
October Caddis
Emergence Triggers
Water Temp
46–54°F
Flow
First fall rains bump the flow
Light
Afternoon-dusk
Water Type
Boulder runs, pocket water
Lifecycle
How Trout Eat It — Stage by Stage
1
Larva
Summer

Huge cased larvae on cobble bottoms — a cased-caddis nymph fished deep does damage in September.

Match It
Cased Caddis#8-10
$3.25
2
Pupa
Late Sep

Pupae migrate to shore at dusk. Swing a big orange soft-hackle through tailouts.

Match It
October Pupa#8-10
$3.50
3
Adult
Oct afternoons

Skate and twitch a big orange dry along banks and boulders — takes are savage.

Match It
Orange Stimulator#8-10
$3.25
October Caddis Skater#8
$3.75
Cross-Reference
Where This Bug Matters
≋ Waterlands · Hatch data blends USGS gauges, NOAA temps & regional emergence records
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