Caddisfly nymph (Genus Pycnocentrodes) Stony cased caddisfly
Subclass: Pterygota (caddisflies)
Common name: Stony cased caddis
Pycnocentrodes caddis larvae constructs mobile cases by binding together sand particles with silk covered in sand grains and small stones. Pycnocentrodes larvae often attach larger stones or snails to the sides of their case. They hide in this case from predators.
The top of their head is much flatter than other sandy/stony cased genera like Pycnocentria or Pycnocentrella.
They are common inhabitants in cool, clear water streams with stony or gravely beds, both in bush covered and farmland areas.
They are collector-gatherers feeding on fine organic matter and grazing on streambed algae.
They pupate by closing the end of the case. After hatching the exit the case, surface and fly away as an adult caddisfly.
Previous page: Caddisfly nymph (Genus: Hydrobiosis)
Next page: Caddisfly nymph (Genus: Triplectides) Stick caddis