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Project Watershed Central New York

Dedicated to facilitating water resource education in Central New York

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Caddisfly Larva

  • Some spin webs to trap food from the flowing water
  • One generation hatches per year
  • Although most species are very sensitive to pollution, some are pollution tolerant
  • Up to 1 1/2 inches long • Very small or no antennae
  • Six segmented legs on upper middle section of body
  • Filamentous gills may be on the end of the body or on the underside
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