Canadian Food Inspection Agency book
Identifying Land Snails and Slugs in Canada: Introduced Species and Native Genera
By F. Wayne Grimm, Robert G. Forsyth, Frederick W. Schueler & Aleta Karstad

Published by the Canadian Food Inspection Agency (CFIA) in 2010 (dated 2009).

From the back cover:

“In a country where native land snails are mostly inconspicuous and secretive, the vast majority of the slugs and snails encountered in settled areas are unwelcome aliens from Europe. These introduced species include the tomato-destroying Fieldslugs, ghostly subterranean Wormslugs, brilliantly coloured Grovesnails and garlic-scented Glass-snails. Some introductions have scarcely spread from where they were introduced, while others are now ubiquitous over large areas of Canada.

“Based on the field work of the late Wayne Grimm and Robert Forsyth’s knowledge of the fauna, this book describes and illustrates 41 alien species now established in Canada. For each species, the distribution, habitat and often fascinating ecology is described, and the reader is introduced to the often extensive literature. To help distinguish introduced species from the diverse native fauna, 56 native genera are also described and illustrated, and keys to all genera are included.”

• F.W. Grimm, R.G. Forsyth, F.W. Schueler & A. Karstad. 2009 [2010]. Identifying Land Snails and Slugs in Canada: Introduced Species and Native Genera. Ottawa: Canadian Food Inspection Agency. Land Snails of British Columbia. 168 pp. ISBN 978-1-100-12439-1.
• Also available in French.

This book, also available on CD or in French, was published in April 2010 by the Canadian Food Inspection Agency.