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HACKBERRY PSYLLID GALLS

Published online by Cambridge University Press:  31 May 2012

C. V. Riley
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Extract

In reply to the questions raised by the Rev. Thomas W. Fyles on p. 84 of the May number, permit me to say:

1. That to speak of “the parasite of Phylloxera vastatrix and the gall insect of the nettle tree,” as he does in the heading to his communication, is inaccurate, since there are many of each.

2. Besides a number of Cecidomyid galls on Celtis, I am acquainted with more than a dozen Psyllid galls upon the plant. The insects producing these galls mostly belong to a new genus which, in a paper that I have prepared on the Psyllidæ of the U.S., is called Pachypsylla.

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Articles
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The Canadian Entomologist , Volume 15 , Issue 8 , August 1883 , pp. 157 - 159
Copyright
Copyright © Entomological Society of Canada 1883

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