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Title: The Interrelationships of Three Gall Makers and Their Natural Enemies, on Hackberry (Celtis occidentalis L.). 
Link to PDF: http://purl.org/net/nysl/nysdocs/1293106
Series: Bulletin No. 402
Authors: Moser, J C.
Publish Year: 1965  NYSM ID: B.402 
Page-Plate-Fig: 95 pp., 31 figs.
Category: Biological
Disiplines: Entomology
Price: $4.00  
Keywords: parasites - Insects, hackberry galls, taxonomy, plants, botany 
Description: This bulletin describes three hackberry galls, the insects which make them and 19 of their natural enemies in the Cayuga Valley near Ithaca, New York. Two galls were caused by psyllids and the third by a cecidomyiid. The taxonomy, biology, morphology and distribution of the species are discussed. 
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