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12 poplar leaf-stem gall aphids species
Pemphigus populitransversus
Pemphigus spyrothecae
Pemphigus populicaulis
Pemphigus obesinymphae
Pemphigus monophagus
Pemphigus populiramulorum
Pemphigus nortonii
Pemphigus betae
Pemphigus populi
Pemphigus bursarius
Pemphigus longicornis
Pemphigus knowltoni
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