Terrestrial gastropods of Idaho. Draft

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This document about terrestrial gastropods in Idaho consists of a checklist, an identification section, and species accounts for terrestrial gastropods occurring in Idaho. The checklist includes 80 species of terrestrial snails and slugs and is a revision an earlier state checklist by Terry Frest and Edward Johannes published in 2000. We have added several species that have been discovered in the state or newly described since their work. We did not include all species that appeared in the earlier work, but, as a rule, only those having location records or being discovered through literature review, museum specimen query, or new survey data. Some species included by Frest were not substantiated with specific locality records in their survey reports and were not discovered since during review of other information sources for this guide. Most of the species appearing on the 2000 list but not included here are nonnative. We are also aware of unverified museum specimens for a number of species not known to occur in the state. In many cases, these would represent dramatic range extensions, but in many instances the “new” species closely resemble or are related to species known to occur in the state. We chose to reserve addition to the checklist pending verification of these specimen identifications. All land snails described in this guide belong to the Phylum Mollusca, Class Gastropoda, and Order Stylommatophora. The checklist follows the systematic order and higher level taxonomy presented in Bouchet and Rocroi (2005). The guide’s Identification section is intended to facilitate identification to species by highlighting the most important shell characteristics for snails and other characteristics for slugs. The bulk of the guide is the Species Accounts. For each species covered, the account provides synonyms, subspecies names (if any), a physical description, distribution (including thumbnail map) and habitat information, conservation status, and selected references, including, separately, any known for information about internal anatomy.

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ELECTRONIC FILE - Zoology: Invertebrates

NOTE: This document (same date, same author) also occurs with a different title: "Terrestrial gastropods of USFS Northern Region: materials developed for Idaho field guide." See U12BOS01IDUS, which was cited in SWAP documents in 02/2016.