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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!

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Bivalvia | Unionida | Unionoidea | Unionidae | Parreysiinae | Indochinellini

genus Unionetta Haas, 1955: cladomics
     2 Recent valid species (2 total species)

Cladomics Summary

number of species = 2 (2 total)
analyzed in 15 cladograms in 10 publications
maximum number of terminals in an analysis = 2 (mean = 1.07, median = 1)

Basic Monophyly

number of cladograms that test basic monophyly (i.e., more than 1 included species) = 1
maximum number of included terminals = 2, (mean = 2 median = 2)
proportion of cladograms that support basic monophyly = 0


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


Chen et al., 2026 [Publ 4833], fig. 1

** Top Monophyly Cladogram **

iTtTbiriSoTroTroSiD
21003251250
  +-------- Harmandia                   
  |                                     
--+     +-- Unionetta_xishuangbannaensis **
  |  +--+                               
  |  |  +-- Unionetta_fabagina__2 **       
  +--+                                  
     |  +-- Unionetta_fabagina__1 **       
     +--+                               
        +-- Scabies                     

Bolotov et al., 2024 [Publ 4369], fig. 2

** Top Sister-Group Cladogram **

iTtTbiriSoTroTroSiD
110161287--
                 +-- Pseudoscabies     
  +--------------+                     
  |              +-- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

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

iTtTbiriSoTroTroSiD
1110262927612
                 +-- Pseudoscabies        
  +--------------+                        
  |              +-- Indonaia             
--+                                       
  |  +-------------- Indochinella         
  |  |                                    
  +--+  +----------- Radiatula            
     |  |                                 
     +--+        +-- Songkhlanaia         
        |  +-----+                        
        |  |     +-- Unionetta_fabagina__2 **
        +--+                              
           |  +----- Harmandia            
           +--+                           
              |  +-- Unionetta_fabagina__1 **
              +--+                        
                 +-- Scabies              

Bolotov et al., 2020 [Publ 4100], fig. S1

iTtTbiriSoTroTroSiD
1101110196--
  +-------------------- Indonaia               
  |                                            
--+  +----------------- Indochinella           
  |  |                                         
  |  |           +----- Radiatula_mouhoti      
  +--+  +--------+                             
     |  |        |  +-- Radiatula_myitkyinae   
     |  |        +--+                          
     +--+           +-- Radiatula_chaudhurii   
        |                                      
        |  +----------- Radiatula_crispisulcata
        +--+                                   
           |  +-------- Scabiellus             
           +--+                                
              |  +----- Harmandia              
              +--+                             
                 |  +-- Unionetta_fabagina **     
                 +--+                          
                    +-- Scabies                

Bolotov et al., 2020 [Publ 4100], fig. 1

iTtTbiriSoTroTroSiD
1101116206--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Scabies           
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Harmandia         

Bolotov et al., 2024 [Publ 4369], fig. S1

iTtTbiriSoTroTroSiD
110162287--
                 +-- Pseudoscabies     
  +--------------+                     
  |              +-- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

Jeratthitikul et al., 2019 [Publ 3922], fig. 1

iTtTbiriSoTroTroSiD
110122176--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

Bolotov et al., 2022 [Publ 4252], fig. 2

iTtTbiriSoTroTroSiD
110160266--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

Bolotov et al., 2022 [Publ 4252], fig. S1

iTtTbiriSoTroTroSiD
110160266--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

Konopleva et al., 2023 [Publ 4262], fig. 8

iTtTbiriSoTroTroSiD
110181136--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Scabies           
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Harmandia         

Bolotov et al., 2022 [Publ 4239], fig. 2

iTtTbiriSoTroTroSiD
110157256--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

Zieritz et al., 2024 [Publ 4381], fig. 2

iTtTbiriSoTroTroSiD
11014400--
-- Unionetta_fabagina **

Bolotov et al., 2022 [Publ 4239], fig. S2

iTtTbiriSoTroTroSiD
110157256--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

Bolotov et al., 2022 [Publ 4239], fig. S1

iTtTbiriSoTroTroSiD
110157256--
  +----------------- Indonaia          
--+                                    
  |  +-------------- Indochinella      
  +--+                                 
     |  +----------- Radiatula         
     +--+                              
        |  +-------- Scabiellus        
        +--+                           
           |  +----- Harmandia         
           +--+                        
              |  +-- Unionetta_fabagina **
              +--+                     
                 +-- Scabies           

Pfeiffer et al., 2018 [Publ 3827], fig. 2

iTtTbiriSoTroTroSiD
110022716610
  +-------------------- Indonaia             
--+                                          
  |  +----------------- Indochinella         
  +--+                                       
     |  +-------------- Radiatula            
     +--+                                    
        |  +----------- Scabiellus           
        +--+                                 
           |  +-------- Unionetta_fabagina__2 **
           +--+                              
              |  +----- Harmandia            
              +--+                           
                 |  +-- Unionetta_fabagina__1 **
                 +--+                        
                    +-- Scabies              
 
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