Rayed Bean (Villosa fabalis)

Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History

Listing Status:   

Where Listed: WHEREVER FOUND

General Information

The rayed bean is a small mussel, usually less than 1.5 inches (in) (3.8 centimeters (cm)) in length (Cummings and Mayer 1992, p. 142; Parmalee and Bogan 1998, p. 244; West et al. 2000, p. 248). The shell outline is elongate or ovate in males and elliptical in females, and moderately inflated in both sexes, but more so in females (Parmalee and Bogan 1998, p. 244). The valves are thick and solid. The anterior end is rounded in females and bluntly pointed in males (Cummings and Mayer 1992, p. 142). Females are generally smaller than males (Parmalee and Bogan 1998, p. 244). Dorsally, the shell margin is straight, while the ventral margin is straight to slightly curved (Cummings and Mayer 1992, p. 142). The beaks are slightly elevated above the hingeline (West et al. 2000, p. 248), with sculpture consisting of double loops with some nodules (Parmalee and Bogan 1998, p. 244). No posterior ridge is evident. Surface texture is smooth and sub-shiny, and green, yellowish-green, or brown in color, with numerous, wavy, dark-green rays of various widths (sometimes obscure in older, blackened specimens) (Cummings and Mayer 1992, p. 142; West et al. 2000, p. 248). Internally, the left valve has two pseudocardinal teeth (tooth-like structures along the hingeline of the internal portion of the shell) that are triangular, relatively heavy, and large, and two short, heavy lateral teeth (Cummings and Mayer 1992, p. 142). The right valve has a low, triangular pseudocardinal tooth, with possibly smaller secondary teeth anteriorly and posteriorly, and a short, heavy, and somewhat elevated lateral tooth (Parmalee and Bogan 1998, p. 244). The color of the nacre (mother-of-pearl) is silvery white or bluish and iridescent posteriorly. Key characters useful for distinguishing the rayed bean from other mussels are its small size, thick valves, unusually heavy teeth for a small mussel, and color pattern (Cummings and Mayer 1992, p. 142).

  • States/US Territories in which the Rayed Bean is known to or is believed to occur:  Indiana , Michigan , New York , Ohio , Pennsylvania
  • US Counties in which the Rayed Bean is known to or is believed to occur:  View All
  • USFWS Refuges in which the Rayed Bean is known to occur:  Erie National Wildlife Refuge
  • Countries in which the the Rayed Bean is known to occur:  Canada
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
03/15/2012 Great Lakes-Big Rivers Region (Region 3)

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
02/14/2012 77 FR 8632 8665 Determination of Endangered Status for the Rayed Bean and Snuffbox Mussels Throughout Their Ranges: Final rule.
11/15/1994 59 FR 58982 59028 ETWP; Animal Candidate Review for Listing as Endangered or Threatened Species.
09/27/2011 76 FR 59836 59862 Partial 90-Day Finding on a Petition To List 404 Species in the Southeastern United States as Endangered or Threatened With Critical Habitat
11/02/2010 75 FR 67552 67583 Listing the Rayed Bean and Snuffbox as Endangered; Proposed Rule
05/22/1984 49 FR 21664 21675 Review of Invertebrate Wildlife for Listing as Endangered or Threatened Species; 49 FR 21664-21675
11/21/1991 56 FR 58804 58836 ETWP; Animal Candidate Review for Listing as Endangered or Threatened Species; 56 FR 58804 58836
12/06/2007 72 FR 69034 69106 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
09/12/2006 71 FR 53756 53835 Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
11/09/2009 74 FR 57804 57878 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
12/10/2008 73 FR 75176 75244 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
01/06/1989 54 FR 554 579 ETWP; Animal Notice of Review; 54 FR 554 579
05/11/2005 70 FR 24870 24934 Endangered and Threatened Wildlife and Plants; Review of Native Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions; Proposed Rule
05/04/2004 69 FR 24876 24904 Review of Species That Are Candidates or Proposed for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions

» Recovery

No recovery information is available for the Rayed Bean.

» Critical Habitat

No critical habitat rules have been published for the Rayed Bean.

» Conservation Plans

No conservation plans have been created for Rayed Bean.

» Petitions

» Life History

No Life History information has been entered into this system for this species.

» Other Resources

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ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

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