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Leopard Slug
Limax maximus
361 observations
Asian Clam
Corbicula fluminea
354 observations
Yellow Sandshell
Lampsilis teres
286 observations
Giant Floater
Pyganodon grandis
274 observations
Fragile Papershell
Potamilus fragilis
157 observations
Pink Heelsplitter
Potamilus alatus
145 observations
Mapleleaf
Quadrula quadrula
132 observations
Three-ridge Mussel
Amblema plicata
123 observations
Pondmussel
Sagittunio subrostratus
121 observations
Plain Pocketbook
Lampsilis cardium
107 observations
Zebra Mussel
Dreissena polymorpha
82 observations
Paper Pondshell
Utterbackia imbecillis
80 observations
Pimpleback
Pustulosa pustulosa
77 observations
White Heelsplitter
Lasmigona complanata
76 observations
Fatmucket
Lampsilis siliquoidea
75 observations
Flamed Tigersnail
Anguispira alternata
68 observations
Pistolgrip
Quadrula verrucosa
68 observations
Carolina Mantleslug
Philomycus carolinianus
62 observations
Deertoe Mussel
Truncilla truncata
62 observations
Pondhorn
Uniomerus tetralasmus
57 observations
Lilliput
Toxolasma parvum
52 observations
Pink Papershell
Potamilus ohiensis
51 observations
Ellipse
Venustaconcha ellipsiformis
51 observations
Three-horn Wartyback
Obliquaria reflexa
48 observations
Wabash Pigtoe
Fusconaia flava
47 observations
Mucket
Ortmanniana ligamentina
47 observations
White-lip Globe Snail
Mesodon thyroidus
44 observations
Purple Wartyback
Cyclonaias tuberculata
42 observations
Ozark mantleslug
Megapallifera ragsdalei
39 observations
Whitewashed Rabdotus
Rabdotus dealbatus
34 observations
Spike
Eurynia dilatata
33 observations
Round Pigtoe
Pleurobema sintoxia
31 observations
flat floater
Utterbackiana suborbiculata
31 observations
Monkeyface Mussel
Theliderma metanevra
31 observations
Butterfly Mussel
Ellipsaria lineolata
30 observations
Western Fanshell
Cyprogenia aberti
29 observations
Bladetooth Wedge
Xolotrema fosteri
29 observations
Black Sandshell
Ligumia recta
28 observations
Ouachita Kidneyshell
Ptychobranchus occidentalis
28 observations
Milky Slug
Deroceras reticulatum
28 observations
Spectaclecase
Cumberlandia monodonta
24 observations
Arkansas brokenray
Lampsilis reeveiana
21 observations
Northern brokenray
Lampsilis brittsi
21 observations
Washboard
Megalonaias nervosa
20 observations
Ozark Pigtoe
Fusconaia ozarkensis
18 observations
Flutedshell
Lasmigona costata
18 observations
Fawnsfoot
Truncilla donaciformis
18 observations
Creeper
Strophitus undulatus
15 observations
Striped Greenhouse Slug
Ambigolimax valentianus
14 observations
Meadow Slug
Deroceras laeve
13 observations
Frequently Asked Questions
- The 10 most common molluscs in Missouri are:
- Leopard Slug (Limax maximus)
- Asian Clam (Corbicula fluminea)
- Yellow Sandshell (Lampsilis teres)
- Giant Floater (Pyganodon grandis)
- Fragile Papershell (Potamilus fragilis)
- Pink Heelsplitter (Potamilus alatus)
- Mapleleaf (Quadrula quadrula)
- Three-ridge Mussel (Amblema plicata)
- Pondmussel (Sagittunio subrostratus)
- Plain Pocketbook (Lampsilis cardium)
- The most observed mollusc in Missouri is Leopard Slug (Limax maximus), with 361 recorded observations.