Lepidostoma
Pycnopsyche, Hydatophylax
Hydatophylax
Anabolia
| Electronic field guide to AQUATIC MACROINVERTEBRATES of SMALL STREAMS in Eastern Massachusetts |
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| Small, square in cross section
| Large, often made of a combination of vegetal and mineral materials
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| Very large, made mostly of chunks of wood and bark
| Made of twigs or grass stems placed lengthwise
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