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The Protonemura meyeri is a small to medium stonefly (body lenght ~7-10 mm.). it has a univoltine life cycle and it hatches from March to June. Quite common in Europe, its favourite habitats are the upper parts of small to medium streams on low mountain ranges.
Ventral view
GENUS KEY: the sausage-shaped gills-vestiges on the prosternum, legacy of the nymphal stage.
Dorsal detail of head and pronotum. This species is long-winged, that is males (and females) have always full developed wings.