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Note: Red text
is defined in the Glossary
Description
Isaac Lea described this species from the Savannah River, Georgia
in 1838. The shell is elongate with
dorsal and ventral
margins parallel to each other. The ventral margin is usually
concave. Umbos do not extend above
the hinge line. The periostracum
is dark brown to black. The pseudocardinal
teeth are relatively small, and lateral
teeth are long and slightly curved. The nacre
color is variable from purple to a bluish white to pink.
Distribution
(see map)
This species has been recorded from the Savannah River Drainage
in Georgia, the Waccamaw River Drainage in North and South Carolina,
and the Cape Fear Drainage in North Carolina. Distribution by County:
Cape Fear River Basin: Bladen Co. (Black River); Brunswick Co. (Town
Creek); Cumberland Co. (Cape Fear River, Carver's Creek); Duplin
Co. (Northeast Cape Fear River); Harnett Co. (Cape Fear River);
Pender Co. (Black River); Sampson Co. (Black River). Waccamaw River
Basin: Columbus Co. (Waccamaw River Basin, including Lake Waccamaw).
NOTE: All headwater areas that flow into these occupied habitats
should receive special management.
Habitat Preferences
Porter (1985) found this species "in a sand substrate at greater
than one meter depths in Lake Waccamaw waters." It may also be found
in clay, in association with rooted aquatic vegetation in canals,
and in small creeks to large rivers.
Life History
The pod lance is a tachytictic
breeder; gravid females may be found
July through August (Porter 1985).
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