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Title
Nematus septentrionalis, Craesus septentrionalis, the flat-legged tenthred on a Prunus cerasus leaf #309389289
Description
Craesus septentrionalis larva rearing up defensively, the flat-legged tenthred or birch sawfly on a Prunus cerasus leaf, species of insect in the order Hymenoptera, the suborder Symphyta and the family Tenthredinidae, The adult sawflies are black and brown with transparent wings and the larvae are yellowish-green and resemble caterpillars. agricultural entomology, plant protection,