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The gregarious larvae of the lesser willow sawfly (Nematus pavidus) feed on Salix caprea, S.purpurea, S. viminalis, S. Alba, and S. fragilis. |
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The gregarious larvae of the lesser willow sawfly (Nematus pavidus) feed on Salix caprea, S.purpurea, S. viminalis, S. Alba, and S. fragilis. |
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