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Milky Slug
Deroceras reticulatum
242 observations
Lymnaea jugularis
Lymnaea jugularis
227 observations
Fatmucket
Lampsilis siliquoidea
136 observations
Banff Springs Snail
Physella johnsoni
103 observations
Giant Floater
Pyganodon grandis
53 observations
Marsh Ramshorn
Planorbella trivolvis
41 observations
White Heelsplitter
Lasmigona complanata
27 observations
Grooved Fingernailclam
Sphaerium simile
27 observations
Subalpine Mountainsnail
Oreohelix subrudis
17 observations
Marsh Pond Snail
Ladislavella elodes
12 observations
Rhomboid Fingernailclam
Sphaerium rhomboideum
8 observations
Pellucid Glass-snail
Vitrina pellucida
8 observations
Acute Bladder Snail
Physella acuta
8 observations
Hairy Snail
Trochulus hispidus
6 observations
Rocky Mountainsnail
Oreohelix strigosa
6 observations
Tadpole Physa
Physella gyrina
4 observations
Big-eared Radix
Radix auricularia
3 observations
Threeridge Valvata
Valvata tricarinata
3 observations
Lake Fingernailclam
Musculium lacustre
3 observations
Striated Fingernailclam
Sphaerium striatinum
3 observations
Quick Gloss Snail
Zonitoides arboreus
3 observations
Garden Snail
Cornu aspersum
3 observations
Pacific Banana Slug
Ariolimax columbianus
2 observations
Brown-lipped Snail
Cepaea nemoralis
2 observations
Leopard Slug
Limax maximus
2 observations
Black Slug
Arion ater
2 observations
Invasive
Great Ram's-horn
Planorbarius corneus
2 observations
Chinese Mystery Snail
Margarya chinensis
2 observations
Western Dusky Slug
Arion subfuscus
1 observations
Vertigo
Vertigo
1 observations
Disc Gyro
Gyraulus circumstriatus
1 observations
Cloaked Physa
Physa megalochlamys
1 observations
Bellmouth Ramshorn
Planorbella campanulata
1 observations
Two-ridged Ramshorn
Helisoma anceps
1 observations
Lovely Vallonia
Vallonia pulchella
1 observations
Meadow Slug
Deroceras laeve
1 observations
Idaho Forestsnail
Allogona ptychophora
1 observations
Forest Disc
Discus whitneyi
1 observations
Glass Physa
Physa skinneri
1 observations
Black Gloss Snail
Zonitoides nitidus
1 observations
Chestnut Slug
Deroceras invadens
1 observations
Galba cockerelli
Galba cockerelli
1 observations
Nautilus Ram's-horn
Armiger crista
1 observations
Shortended Peaclam
Euglesa subtruncata
1 observations
Striped Garden Slug
Ambigolimax parvipenis
1 observations
Triangular Peaclam
Euglesa variabilis
1 observations
Long Fingernailclam
Sphaerium transversum
1 observations
Frequently Asked Questions
- The 10 most common molluscs in Alberta are:
- Milky Slug (Deroceras reticulatum)
- Lymnaea jugularis
- Fatmucket (Lampsilis siliquoidea)
- Banff Springs Snail (Physella johnsoni)
- Giant Floater (Pyganodon grandis)
- Marsh Ramshorn (Planorbella trivolvis)
- White Heelsplitter (Lasmigona complanata)
- Grooved Fingernailclam (Sphaerium simile)
- Subalpine Mountainsnail (Oreohelix subrudis)
- Marsh Pond Snail (Ladislavella elodes)
- The most observed mollusc in Alberta is Milky Slug (Deroceras reticulatum), with 242 recorded observations.
- Some of the most commonly observed invasive molluscs in Alberta include:
- Great Ram's-horn (Planorbarius corneus)