Field Guide to the Herb and Bramble Gall Wasps of North America

Galls induced by cynipid wasps are one of the most impressive and unusual aspects of plant-insect interactions, but those associated with herbaceous plants and brambles are poorly studied. In this field guide, Penn State entomologists Louis Nastasi and Charles Davis present a survey of over 30 types of galls occurring on herbs and brambles in North America, many of which are documented herein for the very first time. Also discussed are tips for collecting and rearing galls, and how individuals and the public can get involved in gall research.

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