AB Fish Report
Insect Encyclopedia

Sow Bug

Asellus

Asellidae

OtherHook #16-206-10 mm body

Peak activity

JanFebMarAprMayJunJulAugSepOctNovDec

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Adult

Adult stage; important for stillwater fly fishing.

Habitat & hatch

Found in spring creeks, tailwaters, and lake littoral zones, most commonly in runs and pools. Bottom among vegetation. 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.