poplar petiolegall aphid
Pemphigus populitransversus Riley

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    Herbert A. 'Joe' Pase III (2)
    Dave Powell (1)
    Minnesota Department of Natural Resources Archive (1)

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0976061
0976061
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Dave Powell

2634012
2634012
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Minnesota Department of Natural Resources Archive

0007069
0007069
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Herbert A. 'Joe' Pase III

0007070
0007070
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Herbert A. 'Joe' Pase III