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Upcoming Events

Information about the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Insects Injurious to Forest and Shade Trees
By Alpheus, S.P.
Fifth Report of the United States Entomological Commission, 1891
Cite: 1189280
Hackberry Psyllidae by C.V. Riley, P.614 - 622 describes a number of unique leaf galls of species in the Pachypsylla celtidismamma complex.

Free ebook from Google Books

added long ago

Different editions?
Different publication dates plus it doesn't seem like the relevant hackberry psyllid info is in the previous link, unless I'm missing it

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