File:Phylloporia bistrigella a birch leaf mined by two larvae, one of which has already cut out its case and departed.JPG
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Phylloporia_bistrigella_a_birch_leaf_mined_by_two_larvae,_one_of_which_has_already_cut_out_its_case_and_departed.JPG (207 × 213 pixels, file size: 6 KB, MIME type: image/jpeg)