Appearance
The species is 8.5–12 millimetres long and is black coloured with colourful metallic reflections on its shin. Their shin is metallic bronze, green or blue coloured.
Distribution
In Europe, it is only absent in the following countries or islands: the Azores, the Canary Islands, the Channel Islands, Crete, Cyclades, Dodecanese, the Faroe Islands, Franz Josef Land, Gibraltar, Iceland, Madeira, Malta, Monaco, the North Aegean islands, Novaya Zemlya, San Marino, the Savage Islands, Sicily, Svalbard and Jan Mayen, and Vatican City. Its presence on the Balearic Islands and Sardinia is doubtful.In Siberia, the species is found on the Lena River.
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