Freshwater Macroinvertebrates in Hong Kong

Onychargia atrocyana (Marsh dancer)

Habitat: larvae found in marshes with dense vegetation

General appearance: body medium sized, up to about 15mm long; head pentagonal with two pairs of dark spots; pale, broad stripe on midline of abdomen; three caudal gills broad, leaf-like with many dark spots scattered throughout the gills

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Labium