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Hubricht's Vertigo (Vertigo hubrichti)


Overview

Overview

Midwest Pleistocene Vertigo (Vertigo hubrichti Pilsbry) State Endangered Species, these terrestrial snails have pupa-shaped shells that are tan, brown, or orange with an indentation in the outer lip and distinctive folds within the aperture, and are 2.1mm long. Inhabitants of cold, undisturbed, and well-forested algific sites occurring characteristically in small patches of decaying deciduous tree leaves (most often paper birch or mountain maple) on or in front of open vents in areas otherwise dominated by bryophytes. Primary habitat is the soil and fern covered ledges of limestone cliffs along the upper Great Lakes.

State status

Status and Natural Heritage Inventory documented occurrences in Wisconsin

The table below provides information about the protected status - both state and federal - and the rank (S and G Ranks) for Hubricht's Vertigo (Vertigo hubrichti). See the Working List Key for more information about abbreviations. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. The map is provided as a general reference of where occurrences of this species meet NHI data standards and is not meant as a comprehensive map of all observations.

Note: Species recently added to the NHI Working List may temporarily have blank occurrence maps.


Documented locations of Vertigo hubrichti in the Natural Heritage Inventory Database as of July 2015.
Summary Information
State StatusEND
Federal Status in Wisconsinnone
State RankS1
Global RankG3Q
Tracked by NHIY
WWAP SGCN

Species guidance


Note: a species guidance document is not available at this time. Information below was compiled from publication PUB-ER-085-99 (now out-of-print).

Identification: Vertigo snails have pupa-shaped shells that are tan, brown, or orange with an indentation in the outer lip and distinctive folds within the aperture. The shell is more globose than that of other snails that have folds within the aperture. Shape, number, and location of the aperture folds are used by specialists to distinguish V. hubrichti from similar species. The shell of V. hubrichti is orange and small (2.1 mm) with usually 6 whorls.

Habitat: Inhabitants of cold, undisturbed, and well-forested algific sites occurring characteristically in small patches of decaying deciduous tree leaves (most often paper birch or mountain maple) on or in front of open vents in areas otherwise dominated by bryophytes. Primary habitat is the soil and fern covered ledges of limestone cliffs along the upper Great Lakes.

State Distribution: Occurs in Brown, Door, Fond du Lac, Manitowoc, Dodge, Sauk, and Grant Counties of Wisconsin.

Management Guidelines: The tendency to occur in small leaf patches makes this snail particularly vulnerable to trampling. Trails on cliffs and development activities threaten patches of existing habitat.

Note: Vertigo occulta Leonard, the Occult Vertigo, was recorded from Grant County, Wisconsin in 1983. These specimens were later identified as a subspecies of V. hubrichti. No extant populations of V. occulta occur in Wisconsin.

Other resources

Links to additional Hubricht's Vertigo information

Other links related to aquatic and terrestrial snails

Photos/Video

Photos


Hubricht's Vertigo

Chicago Field Museum Specimen. Marks are mm.

Photo by Terrell Hyde and W.A. Smith, WDNR.


Last revised: Thursday, May 04, 2017