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Genus: Monadenia

Common name: Sideband snails
​Family: Bradybaenidae

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Monadenia fidelis, Pacific sideband
Origin: Pacific Northwest
Diet: Fungi and decomposing plant material.
Behavior: This is Oregon’s largest native snail. Good climbers.
Where in Oregon: Widespread.
Similar exotics to look for: None. A native species, Monadenia chaceana, or the Siskiyou sideband, occurs in the Umpqua River watershed. Six subspecies of M. fidelis are found in Oregon.
Side view of Pacific sideband shell
Monadenia shells range from 18 to 38 millimeter
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