Electronic field guide to AQUATIC MACROINVERTEBRATES of SMALL STREAMS in Eastern Massachusetts

Front corners of thoracic plates sharply pointed; case made of small stones

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Goera

Gills single; thorax very hairy; case of sand, smooth, tapered, and curved; found in intermittent streams

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Pseudostenophylax

Gills single; case often a combination of sand, stones, twigs and leaves

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Pycnopsyche

Gills single; large case of bark and twigs

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Hydatophylax

"Throat spur" (prosternal horn) long, reaching beyond femur of front legs to outer mouthparts; gills in clusters of three; case of short pieces of vegetation oriented crosswise.

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Platycentropus

Gills in clusters of three; tip of throat spur not reaching to mouth; case of short pieces of vegetation usually oriented crosswise

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Limnephilus

Front corners of first thoracic plate with cluster of short, stiff spines; case of vegetation, with long twigs or grasses oriented lengthwise

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Anabolia

Gills branched into clusters of more than four; case made of leaves, smooth, tapered, and slightly curved; found in intermittent streams

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Ironoquia

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