Caddis-fly sentence example

caddis-fly
  • Some caddis fly species are tolerant of slight pollution.
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  • A gnat pupa swims through the water by powerful strokes of its abdomen, while the caddis-fly pupa, in preparation for its final ecdysis, bites its way out of its subaqueous protective case and rises through the water, so that the fly may emerge into the air.
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