AB Fish Report
Insect Encyclopedia

Diving Beetle

Dytiscidae

Dytiscidae

BeetleHook #8-1210-20 mm body

Peak activity

JanFebMarAprMayJunJulAugSepOctNovDec

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Larva

Aquatic larval stage in littoral vegetation or open water.

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Adult

Adult stage; important for stillwater fly fishing.

Habitat & hatch

Found in lake littoral zones and reservoirs, most commonly in weedy littoral areas and open water. Littoral vegetation and mud bottom. Emergence in shallow bays and weed edges.

Timing

Strongest surface activity occurs around the morning, and the evening.

Sources

  • AB Fish Report synthesis from peer-reviewed Alberta and western North America literature.