Macroinvertebrate Key
Caddisfly Larva
Facts
- Some make houses or cases for themselves out of different materials such as rocks, sand, gravel, twigs or leaves using a glue-like substance secreted from their back end
- 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
Description
- 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
- Two small, thick extensions at the end of the body and each has a single hook at the end
- antennae
- filament
- secreted
- segmented