182732
The common spangle gall on the underside of leaves and the currant gall on the male catkins or occasionally the leaves , develop as chemically induced distortions on pedunculate oak ( Quercus robur ) , or sessile oak ( Quercus petraea ) trees , caused by the cynipid wasp Neuroterus quercusbaccarum which has both agamic and bisexual generations .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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