New York Natural Heritage Program
Black Sandshell
Ligumia recta (Lamarck, 1819)
Black Sandshell (Ligumia recta) Carnegie Museum of Natural History
Family: Unionid Mussels (Unionidae)

State Protection: Not Listed
The species is not listed or protected by New York State.

Federal Protection: Not Listed

State Rarity Rank: S2S3
A State Rarity Rank of S2S3 means: Imperiled or Vulnerable in New York - Very vulnerable to disappearing from New York, or vulnerable to becoming imperiled in New York, due to rarity or other factors; typically 6 to 80 populations or locations in New York, few individuals, restricted range, few remaining acres (or miles of stream), and/or recent and widespread declines. More information is needed to assign a single conservation status.

Global Rarity Rank: G4G5
A Global Rarity Rank of G4G5 means: Apparently or Demonstrably Secure globally - Uncommon to common in the world, but not rare; usually widespread, but may be rare in some parts of its range; possibly some cause for long-term concern due to declines or other factors. More information is needed to assign a single conservation status.

Did you know?
The thick, lustrous shell of this species was highly valued by the pearl button industry in the early 1900s.

State Ranking Justification [-]
This species is currently known from only 7 different creeks or rivers statewide and of those only 2 or 3 consist of healthy, viable populations. Although it has been found more recently in creeks where it was not formerly known in western New York, some of these are only old weathered shells or of poor population viability and likely do not represent range expansions, but rather increased survey effort. The primary host fish species (Sauger) itself is rare and narrowly distributed in the state.

Short-term Trends [-]

Long-term Trends [-]