Weather  MDC

Caddisfly Life Cycle

Life Cycle . The female deposits eggs by swims to the bottom or shakes them lose from the egg sac in the surface film.
The eggs hatch into the larva form and depending upon the species may or may not build a case.
. The larva eventually encase themselves in a cocoon, this includes both the free-living and net spinning. Once in the cocoon, the larva transforms into the pupa.
The pupa will cut open one end of the cocoon and will emerge to the surface. For some species the pupa will shed it�s husk and transform into an adult in mid current. Others will shed the husk in the surface film.
. The pupa transforms quickly into an adult. Caddis are born dry so once they shed the husk whether in midstream or in the surface film after reaching they fly away quickly.
Because they can absorb water, Caddisflies tend to have a longer life outside the water than a mayfly.
Depending upon the species, the life cycle takes about one year. A few species are multi-brood while others may take two years to complete the life cycle.

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Groups of Caddisflies


Free Living Caddisflies

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Net Spinning Caddisflies

Net Spinning Net spinning
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Case Building Caddisflies

Saddle Case Caddisflies

Saddle1 Saddle2

Tube-Case Caddisflies

Grannon Larva Autumn

Purse Case Caddisflies

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