Wild Wonders of Europe / Möllers / Blue-winged olive mayfly (Serratella ignata) nymphal skins / exuviae shed on a stone, San River, Myczkowce, Poland, September 2011
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Wild Wonders of Europe / Möllers / Blue-winged olive mayfly (Serratella ignata) nymphal skins / exuviae shed on a stone, San River, Myczkowce, Poland, September 2011