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

Several pairs of leg-like gills attached to sides of abdomen; two pairs of anal claws; pair of long breathing tubes attached near end of abdomen.CORYDALIDAE

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Chauliodes

Several pairs of leg-like gills along sides of abdomen; two pairs of anal claws; pair of short breathing tubes attached near end of abdomen.CORYDALIDAE

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Nigronia
Several pairs of leg-like gills along sides of abdomen; body ends with single, long, hairy terminal filament.SIALIDAE

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Sialis

Several pairs of leg-like gills along sides of abdomen; one pair of anal claws.COLEOPTERA: GYRINIDAE larvae

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Dineutus
Abdomen covered with fleshy bumps; head appears to gaze upward, with large mandibles easily seen from above.COLEOPTERA:

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HYDROPHILIDAE larvae		Abdomen ends in two slender "tails" (cerci), often with hairs attached; each leg tipped with a pair of tarsal claws.COLEOPTERA:

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DYTISCIDAE larvae
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