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Plain Pocketbook
Lampsilis cardium
359 observations
Fatmucket
Lampsilis siliquoidea
238 observations
Fragile Papershell
Potamilus fragilis
141 observations
Giant Floater
Pyganodon grandis
101 observations
Three-horn Wartyback
Obliquaria reflexa
77 observations
Three-ridge Mussel
Amblema plicata
73 observations
White Heelsplitter
Lasmigona complanata
66 observations
Pimpleback
Pustulosa pustulosa
63 observations
Wabash Pigtoe
Fusconaia flava
55 observations
Striped Whitelip
Webbhelix multilineata
55 observations
Pink Papershell
Potamilus ohiensis
54 observations
Black Sandshell
Ligumia recta
50 observations
Chinese Mystery Snail
Margarya chinensis
48 observations
Mapleleaf
Quadrula quadrula
47 observations
Elktoe
Alasmidonta marginata
44 observations
Flamed Tigersnail
Anguispira alternata
43 observations
Ellipse
Venustaconcha ellipsiformis
40 observations
Zebra Mussel
Dreissena polymorpha
36 observations
Yellow Sandshell
Lampsilis teres
33 observations
Lilliput
Toxolasma parvum
33 observations
Pink Heelsplitter
Potamilus alatus
28 observations
Milky Slug
Deroceras reticulatum
23 observations
Asian Clam
Corbicula fluminea
17 observations
Washboard
Megalonaias nervosa
16 observations
Higgins' Eye Pearly Mussel
Lampsilis higginsii
15 observations
Paper Pondshell
Utterbackia imbecillis
15 observations
Carolina Mantleslug
Philomycus carolinianus
15 observations
Butterfly Mussel
Ellipsaria lineolata
14 observations
Flutedshell
Lasmigona costata
14 observations
Striated Fingernailclam
Sphaerium striatinum
12 observations
Pistolgrip
Quadrula verrucosa
12 observations
Hickorynut
Obovaria olivaria
11 observations
Fawnsfoot
Truncilla donaciformis
11 observations
Monkeyface Mussel
Theliderma metanevra
10 observations
Leopard Slug
Limax maximus
9 observations
Rock-pocketbook
Arcidens confragosus
9 observations
Creeper
Strophitus undulatus
8 observations
Spike
Eurynia dilatata
8 observations
Mucket
Ortmanniana ligamentina
8 observations
Marsh Ramshorn
Planorbella trivolvis
7 observations
Acute Bladder Snail
Physella acuta
7 observations
White-lip Globe Snail
Mesodon thyroidus
6 observations
Deertoe Mussel
Truncilla truncata
6 observations
Meadow Slug
Deroceras laeve
6 observations
flat floater
Utterbackiana suborbiculata
6 observations
Round Pigtoe
Pleurobema sintoxia
5 observations
Broad-banded Forestsnail
Allogona profunda
5 observations
Eastern Whitelip
Neohelix albolabris
4 observations
Pointed Campeloma
Campeloma decisum
4 observations
Grooved Fingernailclam
Sphaerium simile
4 observations
Frequently Asked Questions
- The 10 most common molluscs in Iowa are:
- Plain Pocketbook (Lampsilis cardium)
- Fatmucket (Lampsilis siliquoidea)
- Fragile Papershell (Potamilus fragilis)
- Giant Floater (Pyganodon grandis)
- Three-horn Wartyback (Obliquaria reflexa)
- Three-ridge Mussel (Amblema plicata)
- White Heelsplitter (Lasmigona complanata)
- Pimpleback (Pustulosa pustulosa)
- Wabash Pigtoe (Fusconaia flava)
- Striped Whitelip (Webbhelix multilineata)
- The most observed mollusc in Iowa is Plain Pocketbook (Lampsilis cardium), with 359 recorded observations.