Vertigo hubrichti hubrichti    (Pilsbry, 1934)

Midwest Pleistocene Vertigo 


MN Status:
delisted
Federal Status:
none
CITES:
none
USFS:
none

Group:
snail
Class:
Gastropoda
Order:
Stylommatophora
Family:
Pupillidae
Habitats:

(Mouse over a habitat for definition)


Vertigo hubrichti hubrichti Vertigo hubrichti hubrichti Vertigo hubrichti hubrichti

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Vertigo hubrichti hubrichti
Minnesota range map
Map Interpretation
North American range map
Map Interpretation

  Basis for Former Listing

The Midwest Pleistocene vertigo is a rare landsnail with a limited range in southeastern Minnesota, northeastern Iowa, and southwestern Wisconsin. The majority of known populations in Minnesota are in Fillmore County. This taxon was more widespread during the Wisconsin glacial period (>12,000 years ago), but it now survives only as small relict populations with very specific habitat requirements. The rarity of this species led to its classification as endangered in Minnesota in 1996.

  Basis for Delisting

Since its listing in 1996, the known range of the Midwest Pleistocene vertigo has expanded into eastern Wisconsin, Ontario, and also now includes Alaska near Fairbanks and northern Yukon. Field surveys and review of museum collections also have demonstrated the Midwest Pleistocene vertigo's occurrence in a broader range of habitats. Moreover, taxonomic work based on shell morphology and genetic data has determined that V. hubrichti hubrichti cannot be considered a distinct species, but simply a different morphologic shell form of the species V. arthuri, a more widespread species in Minnesota. Therefore, a status of endangered is no longer necessary. The Midwest Pleistocene vertigo was delisted in 2013.