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Page last updated
Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

Search the database pages:

Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Amblemini

genus Reginaia Campbell & Lydeard, 2012: cladomics
     3 Recent valid species (3 total species)

Cladomics Summary

number of species = 3 (3 total)
analyzed in 35 cladograms in 21 publications
maximum number of terminals in an analysis = 2 (mean = 1.6, median = 2)

Basic Monophyly

number of cladograms that test basic monophyly (i.e., more than 1 included species) = 21
maximum number of included terminals = 2, (mean = 2 median = 2)
proportion of cladograms that support basic monophyly = 1

Pairwise Cladogram Clustering

The graphs below depict in two dimensions all pair-wise ingroup distances within the cladome. See the Cladmoics FARQ for more information.


PCoA Ordination


NJ Tree

Campbell et al., 2005 [Publ 2660], fig. 2

** Top Monophyly Cladogram **

iTtTbiriSoTroTroSiD
220310032--
  +----- Amblema             
  |                          
--+  +-- Reginaia_ebenus **     
  |  |                       
  +--+-- Reginaia_rotulata__1 **
     |                       
     +-- Reginaia_rotulata__2 **

Campbell & Lydeard, 2026 [Publ 4810], fig. 6-14

** Top Sister-Group Cladogram **

iTtTbiriSoTroTroSiD
220263042--
  +-- Reginaia_rotulata **
--+                    
  +-- Reginaia_ebenus **

Campbell & Lydeard, 2012 [Publ 3308], fig. 3

iTtTbiriSoTroTroSiD
22034132--
  +-- Reginaia_ebenus__1 **
  |                     
--+-- Reginaia_ebenus__2 **
  |                     
  +-- Reginaia_rotulata **

Campbell & Lydeard, 2012 [Publ 3308], fig. 4

iTtTbiriSoTroTroSiD
22024032--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Inoue et al., 2020 [Publ 4128], fig. 2

iTtTbiriSoTroTroSiD
22022131--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Lydeard et al., 2000 [Publ 2654], fig. 2a

iTtTbiriSoTroTroSiD
22031200--
  +-- Reginaia_rotulata__1 **
  |                       
--+-- Reginaia_rotulata__2 **
  |                       
  +-- Reginaia_ebenus **

Inoue et al., 2020 [Publ 4128], fig. 3

iTtTbiriSoTroTroSiD
22022031--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Lydeard et al., 2000 [Publ 2654], fig. 2d

iTtTbiriSoTroTroSiD
22021200--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Inoue et al., 2020 [Publ 3941], fig. 3

iTtTbiriSoTroTroSiD
22024021--
  +----- Amblema          
--+                       
  |  +-- Reginaia_ebenus **  
  +--+                    
     +-- Reginaia_rotulata **

Inoue et al., 2020 [Publ 3941], fig. 4

iTtTbiriSoTroTroSiD
22023921--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Lydeard et al., 2000 [Publ 2654], fig. 2b

iTtTbiriSoTroTroSiD
22031200--
  +-- Reginaia_rotulata__1 **
  |                       
--+-- Reginaia_rotulata__2 **
  |                       
  +-- Reginaia_ebenus **

Inoue et al., 2018 [Publ 3858], fig. 1_3a-c

iTtTbiriSoTroTroSiD
220210332--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Campbell & Lydeard, 2012 [Publ 3309], fig. 3

iTtTbiriSoTroTroSiD
22027132--
  +----- Amblema          
--+                       
  |  +-- Reginaia_ebenus **  
  +--+                    
     +-- Reginaia_rotulata **

Pfeiffer et al., 2016 [Publ 3660], fig. 2

iTtTbiriSoTroTroSiD
22023621--
  +----- Amblema          
--+                       
  |  +-- Reginaia_rotulata **
  +--+                    
     +-- Reginaia_ebenus **

Campbell & Lydeard, 2012 [Publ 3308], fig. 1

iTtTbiriSoTroTroSiD
22024032--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Lydeard et al., 2000 [Publ 2654], fig. 2c

iTtTbiriSoTroTroSiD
22021200--
  +-- Reginaia_ebenus **  
--+                    
  +-- Reginaia_rotulata **

Campbell & Lydeard, 2012 [Publ 3309], fig. 1-2

iTtTbiriSoTroTroSiD
22027132--
  +----- Plectomerus      
--+                       
  |  +-- Reginaia_ebenus **  
  +--+                    
     +-- Reginaia_rotulata **

Campbell & Lydeard, 2012 [Publ 3308], fig. 2

iTtTbiriSoTroTroSiD
22024032--
  +----- Amblema          
--+                       
  |  +-- Reginaia_ebenus **  
  +--+                    
     +-- Reginaia_rotulata **

Inoue et al., 2013 [Publ 3528], fig. 3

iTtTbiriSoTroTroSiD
22021511--
  +----- Amblema          
--+                       
  |  +-- Reginaia_ebenus **  
  +--+                    
     +-- Reginaia_rotulata **

Campbell et al., 2005 [Publ 2660], fig. 1

iTtTbiriSoTroTroSiD
220210032--
  +----- Plectomerus      
--+                       
  |  +-- Reginaia_ebenus **  
  +--+                    
     +-- Reginaia_rotulata **

Pfeiffer et al., 2019 [Publ 3866], fig. 1

iTtTbiriSoTroTroSiD
22022921--
  +----- Amblema          
--+                       
  |  +-- Reginaia_ebenus **  
  +--+                    
     +-- Reginaia_rotulata **

Boyer et al., 2011 [Publ 2718], fig. 3

iTtTbiriSoTroTroSiD
11013411--
-- Reginaia_ebenus **

Hauck et al., 2023 [Publ 4333], fig. 9

iTtTbiriSoTroTroSiD
11011200--
-- Reginaia_ebenus **

Boyer et al., 2011 [Publ 2718], fig. 4

iTtTbiriSoTroTroSiD
11013711--
-- Reginaia_ebenus **

Pfeiffer et al., 2019 [Publ 3937], fig. 4-5

iTtTbiriSoTroTroSiD
11015622--
  +----- Reginaia_ebenus **
--+                     
  |  +-- Plectomerus    
  +--+                  
     +-- Amblema

Smith et al., 2020 [Publ 4129], fig. 1

iTtTbiriSoTroTroSiD
11012722--
  +----- Reginaia_ebenus **
--+                     
  |  +-- Amblema        
  +--+                  
     +-- Plectomerus

Smith et al., 2019 [Publ 3951], fig. 2

iTtTbiriSoTroTroSiD
11014022--
  +-- Amblema        
--+                  
  +-- Reginaia_ebenus **

Serb et al., 2003 [Publ 2659], fig. 2

iTtTbiriSoTroTroSiD
11012822--
-- Reginaia_rotulata **

Burdick & White, 2007 [Publ 2679], fig. 3

iTtTbiriSoTroTroSiD
11012900--
-- Reginaia_ebenus **

Pfeiffer et al., 2019 [Publ 3937], fig. 6

iTtTbiriSoTroTroSiD
11015622--
  +----- Reginaia_ebenus **
--+                     
  |  +-- Plectomerus    
  +--+                  
     +-- Amblema

Smith et al., 2020 [Publ 4129], fig. 2-3

iTtTbiriSoTroTroSiD
11012722--
  +----- Reginaia_ebenus **
--+                     
  |  +-- Amblema        
  +--+                  
     +-- Plectomerus

Serb et al., 2003 [Publ 2659], fig. 3

iTtTbiriSoTroTroSiD
11012822--
-- Reginaia_rotulata **

Chase et al., 2018 [Publ 3847], fig. 4

iTtTbiriSoTroTroSiD
11013800--
-- Reginaia_ebenus **

Breton et al., 2011 [Publ 3376], fig. 3

iTtTbiriSoTroTroSiD
11013700--
-- Reginaia_ebenus **

Burlakova et al., 2019 [Publ 3899], fig. 1

iTtTbiriSoTroTroSiD
11013211--
-- Reginaia_ebenus **
 
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