Prepared by Robert Forsyth
Over a decade ago, I published a paper on the snails of this area (Forsyth 2001), comparing what I found in the valley to the (rather wetter) mountain slopes. The results are pretty much unchanged, though I have since made many additional collections and observations from more sites. Here is the updated list that for completeness also includes the freshwater (aquatic) molluscs known to me (the Bivalvia and the gastropod families Lymnaeidae, Physidae, and Planorbidae).
Checklist of the Bulkley Valley Mollusca
CLASS BIVALVIA
Family Unionidae [aquatic]
- Anodonta kennerleyi – Western Floater
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Family Sphaeriidae [aquatic]
- Musculium securis – Pond Fingernailclam
- Pisidium spp. – Peaclams
CLASS GASTROPODA
Family Lymnaeidae [aquatic]
- Galba galbana – Boreal Fossaria
- Galba modicella – Rock Fossaria
- Lymnaea stagnalis – Swamp Lymnaea
- Stagnicola catascopium – Woodland Pondsnail
- Stagnicola elodes – Marsh Pondsnail
Family Physidae [aquatic]
- Physella gyrina – Tadpole Physa
Family Planorbidae [aquatic]
- Gyraulus circumstriatus – Disc Gyro
- Gyraulus deflectus – Flexed Gyro
- Gyraulus parvus – Ash Gyro
- Helisoma anceps – Two-ridge Rams-horn
- Planorbella trivolvis – Marsh Rams-horn
- Promenetus exacuous – Umbilicate Sprite
- Ferrissia fragilis – Fragile Ancylid
Family Succineidae
- Oxyloma sp. – Ambersnail
Family Cochlicopidae
- Cochlicopa lubrica – Glossy Pillar
Family Valloniidae
- Vallonia excentrica – Iroquois Vallonia
- Vallonia gracilicosta – Multirib Vallonia
- Vallonia pulchella – Lovely Vallonia
- Zoogenetes harpa – Boreal Top
Family Vertiginidae
- Columella columella – Mellow Column
- Columella edentula – Toothless Column
- Vertigo columbiana – Columbia Vertigo
- Vertigo cristata – Crested Vertigo
- Vertigo modesta – Cross Vertigo
- Vertigo ovata – Ovate Vertigo
Family Punctidae
- Paralaoma servilis – Pin-head Spot
- Punctum randolphii – Conical Spot
Family Discidae
- Discus whitneyi – Forest Disc
Family Pristilomatidae
- Pristiloma arcticum – Northern Tightcoil
- Pristiloma chersinella – Black-foot Tightcoil
- Pristiloma lansingi – Denticulate Tightcoil
Family Euconulidae
- Euconulus fulvus – Brown Hive
- Euconulus praticola – Marsh Hive
Family Gastrodontidae
- Zonitoides arboreus – Quick Gloss
Family Oxychilidae
- Nesovitrea binneyana – Blue Glass
- Nesovitrea electrina – Amber Glass
Family Vitrinidae
- Vitrina pellucida – Western Glass-snail
Family Agriolimacidae
- Deroceras laeve – Meadow Slug
- Deroceras reticulatum – Grey Fieldslug
Family Arionidae
- Arion subfuscus – Dusky Arion
Family Helicidae
- Cepaea nemoralis – Grovesnail
Family Polygyridae
- Vespericola columbianus – Northwest Hesperian
Family Thysanophoridae
- Microphysula cookei – Vancouver Snail
- Forsyth, R.G. “2001” [2002]. New records for land snails from the mountains of northwestern British Columbia. The Canadian Field-Naturalist 115 (2): 223–228. [pdf here or at Biodersity Heritage Library]