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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 | Gonideinae | Rectidentini | Rectidentina

genus Ensidens Frierson, 1911: cladomics
     6 Recent valid species (6 total species)

Cladomics Summary

number of species = 6 (6 total)
analyzed in 47 cladograms in 33 publications
maximum number of terminals in an analysis = 6 (mean = 2.74, median = 1)

Basic Monophyly

number of cladograms that test basic monophyly (i.e., more than 1 included species) = 21
maximum number of included terminals = 6, (mean = 4.9 median = 5)
proportion of cladograms that support basic monophyly = 0.9


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


Konopleva et al., 2019 [Publ 4041], fig. 3

** Top Monophyly Cladogram **

iTtTbiriSoTroTroSiD
6120728620
  +-- Ensidens_ingallsianus **
  |                        
  +-- Ensidens_telus **       
  |                        
  +-- Ensidens_dugasti **     
  |                        
  +-- Hyriopsis_khoratensis
  |                        
  +-- Hyriopsis_bialata    
  |                        
  +-- Hyriopsis_myersiana  
  |                        
--+-- Hyriopsis_desowitzi  
  |                        
  +-- Rectidens            
  |                        
  +-- Hyriopsis_panhai     
  |                        
  +-- Ensidens_jaculus__1 **  
  |                        
  +-- Ensidens_jaculus__2 **  
  |                        
  +-- Ensidens_spiculus **    
  |                        
  +-- Ensidens_sagittarius ** 

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

** Top Sister-Group Cladogram **

iTtTbiriSoTroTroSiD
664662511211
                 +-- Ensidens_ingallsianus **  
           +-----+                          
           |     +-- Ensidens_telus **         
           |                                
  +--------+     +-- Ensidens_dugasti **       
  |        |  +--+                          
  |        |  |  +-- Ensidens_sagittarius **   
  |        +--+                             
  |           |  +-- Ensidens_jaculus **       
  |           +--+                          
--+              +-- Ensidens_spiculus **      
  |                                         
  |           +----- Rectidens              
  |  +--------+                             
  |  |        |  +-- Hyriopsis_delaportei   
  |  |        +--+                          
  |  |           +-- Hyriopsis_desowitzi    
  +--+                                      
     |  +----------- Hyriopsis_panhai       
     |  |                                   
     |  |        +-- Hyriopsis_bialata      
     +--+  +-----+                          
        |  |     +-- Hyriopsis_khoratensis  
        |  |                                
        +--+     +-- Hyriopsis_kratiensis   
           |  +--+                          
           |  |  +-- Hyriopsis_phuphaniensis
           +--+                             
              |  +-- Hyriopsis_myersiana    
              +--+                          
                 +-- Hyriopsis_sakhonensis  

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

iTtTbiriSoTroTroSiD
66467610211
                       +-- Ensidens_ingallsianus **  
                 +-----+                          
                 |     +-- Ensidens_telus **         
                 |                                
  +--------------+     +-- Ensidens_jaculus **       
  |              |  +--+                          
  |              |  |  +-- Ensidens_spiculus **      
  |              +--+                             
  |                 |  +-- Ensidens_sagittarius **   
--+                 +--+                          
  |                    +-- Ensidens_dugasti **       
  |                                               
  |                    +-- Hyriopsis_desowitzi    
  |  +-----------------+                          
  |  |                 +-- Hyriopsis_delaportei   
  +--+                                            
     |  +----------------- Rectidens              
     |  |                                         
     +--+  +-------------- Hyriopsis_panhai       
        |  |                                      
        +--+  +----------- Hyriopsis_myersiana    
           |  |                                   
           +--+        +-- Hyriopsis_khoratensis  
              |  +-----+                          
              |  |     +-- Hyriopsis_bialata      
              +--+                                
                 |  +----- Hyriopsis_sakhonensis  
                 +--+                             
                    |  +-- Hyriopsis_phuphaniensis
                    +--+                          
                       +-- Hyriopsis_kratiensis   

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

iTtTbiriSoTroTroSiD
66461116211
     +----------- Hyriopsis_desowitzi  
     |                                 
  +--+  +-------- Rectidens            
  |  |  |                              
  |  +--+     +-- Hyriopsis_khoratensis
  |     |  +--+                        
  |     |  |  +-- Hyriopsis_bialata    
  |     +--+                           
  |        |  +-- Hyriopsis_myersiana  
--+        +--+                        
  |           +-- Hyriopsis_panhai     
  |                                    
  |           +-- Ensidens_telus **       
  |     +-----+                        
  |     |     +-- Ensidens_ingallsianus **
  |     |                              
  +-----+     +-- Ensidens_jaculus **     
        |  +--+                        
        |  |  +-- Ensidens_spiculus **    
        +--+                           
           |  +-- Ensidens_dugasti **     
           +--+                        
              +-- Ensidens_sagittarius ** 

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

iTtTbiriSoTroTroSiD
66461056211
     +-------------- Hyriopsis_desowitzi  
  +--+                                    
  |  |  +----------- Rectidens            
  |  +--+                                 
  |     |  +-------- Hyriopsis_panhai     
  |     +--+                              
  |        |  +----- Hyriopsis_myersiana  
  |        +--+                           
--+           |  +-- Hyriopsis_khoratensis
  |           +--+                        
  |              +-- Hyriopsis_bialata    
  |                                       
  |              +-- Ensidens_telus **       
  |        +-----+                        
  |        |     +-- Ensidens_ingallsianus **
  |        |                              
  +--------+     +-- Ensidens_dugasti **     
           |  +--+                        
           |  |  +-- Ensidens_sagittarius ** 
           +--+                           
              |  +-- Ensidens_spiculus **    
              +--+                        
                 +-- Ensidens_jaculus **     

Pfeiffer et al., 2021 [Publ 4126], fig. 9

iTtTbiriSoTroTroSiD
6646237211
              +-- Rectidens            
  +-----------+                        
  |           +-- Hyriopsis            
  |                                    
--+           +-- Ensidens_ingallsianus **
  |  +--------+                        
  |  |        +-- Ensidens_telus **       
  +--+                                 
     |  +-------- Ensidens_spiculus **    
     +--+                              
        |  +----- Ensidens_dugasti **     
        +--+                           
           |  +-- Ensidens_jaculus **     
           +--+                        
              +-- Ensidens_sagittarius ** 

Pfeiffer et al., 2021 [Publ 4126], fig. 30

iTtTbiriSoTroTroSiD
664611111
  +-------------- Rectidens            
  |                                    
--+           +-- Ensidens_telus **       
  |  +--------+                        
  |  |        +-- Ensidens_ingallsianus **
  +--+                                 
     |  +-------- Ensidens_dugasti **     
     +--+                              
        |  +----- Ensidens_sagittarius ** 
        +--+                           
           |  +-- Ensidens_spiculus **    
           +--+                        
              +-- Ensidens_jaculus **     

Bolotov et al., 2017 [Publ 3764], fig. S1

iTtTbiriSoTroTroSiD
55351196211
           +-- Ensidens_telus **       
     +-----+                        
     |     +-- Ensidens_ingallsianus **
  +--+                              
  |  |  +----- Ensidens_jaculus **     
  |  +--+                           
  |     |  +-- Ensidens_spiculus **    
  |     +--+                        
--+        +-- Ensidens_sagittarius ** 
  |                                 
  |  +-------- Hyriopsis_desowitzi  
  |  |                              
  |  +-------- Rectidens            
  +--+                              
     |  +----- Hyriopsis_panhai     
     |  |                           
     +--+  +-- Hyriopsis_myersiana  
        |  |                        
        +--+-- Hyriopsis_bialata    
           |                        
           +-- Hyriopsis_khoratensis

Konopleva et al., 2019 [Publ 3900], fig. 1

iTtTbiriSoTroTroSiD
5535466211
              +-- Ensidens_ingallsianus **
        +-----+                        
        |     +-- Ensidens_telus **       
  +-----+                              
  |     |  +----- Ensidens_sagittarius ** 
  |     +--+                           
  |        |  +-- Ensidens_jaculus **     
--+        +--+                        
  |           +-- Ensidens_spiculus **    
  |                                    
  |  +----------- Hyriopsis_desowitzi  
  |  |                                 
  +--+----------- Rectidens            
     |                                 
     |  +-------- Hyriopsis_panhai     
     +--+                              
        |  +----- Hyriopsis_myersiana  
        +--+                           
           |  +-- Hyriopsis_khoratensis
           +--+                        
              +-- Hyriopsis_bialata    

Huang et al., 2019 [Publ 3843], fig. S4

iTtTbiriSoTroTroSiD
55351956211
  +-------------- Hyriopsis_desowitzi  
  |                                    
  +-------------- Hyriopsis_myersiana  
  |                                    
  +-------------- Hyriopsis_panhai     
  |                                    
--+           +-- Hyriopsis_bialata    
  +-----------+                        
  |           +-- Hyriopsis_khoratensis
  |                                    
  |  +----------- Rectidens            
  |  |                                 
  +--+        +-- Ensidens_telus **       
     |  +-----+                        
     |  |     +-- Ensidens_ingallsianus **
     +--+                              
        |  +----- Ensidens_sagittarius ** 
        +--+                           
           |  +-- Ensidens_spiculus **    
           +--+                        
              +-- Ensidens_jaculus **     

Huang et al., 2019 [Publ 3843], fig. S3

iTtTbiriSoTroTroSiD
55351936211
              +-- Ensidens_telus **       
        +-----+                        
        |     +-- Ensidens_ingallsianus **
  +-----+                              
  |     |  +----- Ensidens_sagittarius ** 
  |     +--+                           
  |        |  +-- Ensidens_spiculus **    
--+        +--+                        
  |           +-- Ensidens_jaculus **     
  |                                    
  |  +----------- Hyriopsis_desowitzi  
  |  |                                 
  +--+  +-------- Rectidens            
     |  |                              
     +--+     +-- Hyriopsis_panhai     
        |  +--+                        
        |  |  +-- Hyriopsis_khoratensis
        +--+                           
           |  +-- Hyriopsis_bialata    
           +--+                        
              +-- Hyriopsis_myersiana  

Bolotov et al., 2017 [Publ 3761], fig. S1

iTtTbiriSoTroTroSiD
55351336211
              +-- Ensidens_telus **       
        +-----+                        
        |     +-- Ensidens_ingallsianus **
  +-----+                              
  |     |  +----- Ensidens_sagittarius ** 
  |     +--+                           
  |        |  +-- Ensidens_spiculus **    
  |        +--+                        
--+           +-- Ensidens_jaculus **     
  |                                    
  |           +-- Hyriopsis_bialata    
  |  +--------+                        
  |  |        +-- Hyriopsis_khoratensis
  +--+                                 
     |  +-------- Hyriopsis_panhai     
     +--+                              
        |  +----- Hyriopsis_myersiana  
        +--+                           
           |  +-- Rectidens            
           +--+                        
              +-- Hyriopsis_desowitzi  

Muanta et al., 2019 [Publ 3921], fig. 2

iTtTbiriSoTroTroSiD
554644112
  +-------------- Hyriopsis              
  |                                      
--+           +-- Ensidens_ingallsianus **  
  |  +--------+                          
  |  |        +-- Ensidens_telus **         
  +--+                                   
     |  +-------- Ensidens_sagittarius__2 **
     +--+                                
        |  +----- Ensidens_jaculus **       
        +--+                             
           |  +-- Ensidens_sagittarius__1 **
           +--+                          
              +-- Ensidens_dugasti **       

Bolotov et al., 2018 [Publ 3826], fig. 2

iTtTbiriSoTroTroSiD
580577315
  +-- Ensidens_telus **       
  |                        
  +-- Ensidens_ingallsianus **
  |                        
  +-- Ensidens_jaculus **     
  |                        
  +-- Hyriopsis_desowitzi  
--+                        
  +-- Hyriopsis_myersiana  
  |                        
  +-- Hyriopsis_khoratensis
  |                        
  +-- Ensidens_spiculus **    
  |                        
  +-- Ensidens_sagittarius ** 

Huang et al., 2019 [Publ 3843], fig. 2

iTtTbiriSoTroTroSiD
55351956211
  +----------- Hyriopsis_desowitzi  
  |                                 
  +----------- Rectidens            
  |                                 
  |        +-- Hyriopsis_bialata    
  |        |                        
  |        +-- Hyriopsis_myersiana  
--+--------+                        
  |        +-- Hyriopsis_panhai     
  |        |                        
  |        +-- Hyriopsis_khoratensis
  |                                 
  |        +-- Ensidens_ingallsianus **
  |  +-----+                        
  |  |     +-- Ensidens_telus **       
  +--+                              
     |  +----- Ensidens_sagittarius ** 
     +--+                           
        |  +-- Ensidens_spiculus **    
        +--+                        
           +-- Ensidens_jaculus **     

Bolotov et al., 2017 [Publ 3761], fig. S2

iTtTbiriSoTroTroSiD
55351336211
           +----- Hyriopsis_panhai     
           |                           
  +--------+----- Hyriopsis_khoratensis
  |        |                           
  |        |  +-- Hyriopsis_myersiana  
  |        +--+                        
--+           +-- Hyriopsis_bialata    
  |                                    
  |  +----------- Hyriopsis_desowitzi  
  |  |                                 
  |  +----------- Rectidens            
  +--+                                 
     |        +-- Ensidens_telus **       
     |  +-----+                        
     |  |     +-- Ensidens_ingallsianus **
     +--+                              
        |  +----- Ensidens_sagittarius ** 
        +--+                           
           |  +-- Ensidens_spiculus **    
           +--+                        
              +-- Ensidens_jaculus **     

Zieritz et al., 2020 [Publ 4102], fig. 4

iTtTbiriSoTroTroSiD
5535266211
           +-- Ensidens_telus **       
     +-----+                        
     |     +-- Ensidens_ingallsianus **
  +--+                              
  |  |  +----- Ensidens_sagittarius ** 
  |  +--+                           
  |     |  +-- Ensidens_spiculus **    
  |     +--+                        
--+        +-- Ensidens_jaculus **     
  |                                 
  |  +-------- Hyriopsis_desowitzi  
  |  |                              
  |  +-------- Rectidens            
  +--+                              
     |  +----- Hyriopsis_panhai     
     |  |                           
     +--+  +-- Hyriopsis_khoratensis
        |  |                        
        +--+-- Hyriopsis_bialata    
           |                        
           +-- Hyriopsis_myersiana  

Wu et al., 2021 [Publ 4366], fig. 6

iTtTbiriSoTroTroSiD
3313881111
  +-------- Hyriopsis           
--+                             
  |  +----- Ensidens_telus **      
  +--+                          
     |  +-- Ensidens_spiculus **   
     +--+                       
        +-- Ensidens_sagittarius **

Wu et al., 2021 [Publ 4366], fig. 2_I

iTtTbiriSoTroTroSiD
3313881111
  +-------- Hyriopsis           
--+                             
  |  +----- Ensidens_telus **      
  +--+                          
     |  +-- Ensidens_spiculus **   
     +--+                       
        +-- Ensidens_sagittarius **

Lopes-Lima et al., 2017 [Publ 3745], fig. 1-2

iTtTbiriSoTroTroSiD
3303774210
  +----- Hyriopsis_desowitzi  
  |                           
  +----- Rectidens            
  |                           
  |  +-- Hyriopsis_khoratensis
--+--+                        
  |  +-- Hyriopsis_myersiana  
  |                           
  |  +-- Ensidens_ingallsianus **
  |  |                        
  +--+-- Ensidens_telus **       
     |                        
     +-- Ensidens_jaculus **     

Jeratthitikul et al., 2021 [Publ 4212], fig. 4

iTtTbiriSoTroTroSiD
22021992--
                 +-- Ensidens_ingallsianus **  
  +--------------+                          
  |              +-- Ensidens_jaculus **       
  |                                         
--+              +-- Hyriopsis_desowitzi    
  |  +-----------+                          
  |  |           +-- Hyriopsis_delaportei   
  |  |                                      
  +--+  +----------- Rectidens              
     |  |                                   
     |  |     +----- Hyriopsis_myersiana    
     +--+  +--+                             
        |  |  |  +-- Hyriopsis_bialata      
        |  |  +--+                          
        +--+     +-- Hyriopsis_panhai       
           |                                
           |  +----- Hyriopsis_khoratensis  
           +--+                             
              |  +-- Hyriopsis_phuphaniensis
              +--+                          
                 +-- Hyriopsis_sakhonensis  

Jeratthitikul et al., 2021 [Publ 4219], fig. 2

iTtTbiriSoTroTroSiD
11013422--
  +----- Ensidens_ingallsianus **
--+                           
  |  +-- Hyriopsis            
  +--+                        
     +-- Rectidens            

Zieritz et al., 2021 [Publ 4218], fig. 5

iTtTbiriSoTroTroSiD
11013032--
  +----- Ensidens_sagittarius **
--+                          
  |  +-- Rectidens           
  +--+                       
     +-- Hyriopsis           

Dai et al., 2023 [Publ 4285], fig. 3-ML

iTtTbiriSoTroTroSiD
11014411--
  +-- Hyriopsis            
--+                        
  +-- Ensidens_ingallsianus **

Jeratthitikul et al., 2022 [Publ 4260], fig. S2_2

iTtTbiriSoTroTroSiD
11017522--
  +----- Ensidens_ingallsianus **
--+                           
  |  +-- Rectidens            
  +--+                        
     +-- Hyriopsis            

Pfeiffer et al., 2018 [Publ 3827], fig. 1

iTtTbiriSoTroTroSiD
1101622--
  +-- Ensidens **    
  |               
  +-- Hyriopsis__1
--+               
  +-- Hyriopsis__2
  |               
  +-- Rectidens   

Dai et al., 2025 [Publ 4441], fig. 1

iTtTbiriSoTroTroSiD
11014611--
  +-- Ensidens_ingallsianus **
--+                        
  +-- Hyriopsis            

Pfeiffer & Graf, 2015 [Publ 3620], fig. 2

iTtTbiriSoTroTroSiD
11013900--
-- Ensidens_telus **

Jeratthitikul et al., 2022 [Publ 4260], fig. S1_1

iTtTbiriSoTroTroSiD
11017522--
  +-- Ensidens_ingallsianus **
  |                        
--+-- Hyriopsis            
  |                        
  +-- Rectidens            

Dai et al., 2024 [Publ 4389], fig. 3

iTtTbiriSoTroTroSiD
11014511--
  +-- Ensidens_ingallsianus **
--+                        
  +-- Hyriopsis            

Chen et al., 2025 [Publ 4663], fig. 1

iTtTbiriSoTroTroSiD
11014711--
  +-- Ensidens_ingallsianus **
--+                        
  +-- Hyriopsis            

Lopes-Lima et al., 2020 [Publ 4080], fig. 2-4

iTtTbiriSoTroTroSiD
110112111--
-- Ensidens_sagittarius **

Liu et al., 2024 [Publ 4380], fig. 5

iTtTbiriSoTroTroSiD
11013532--
  +-------- Ensidens_sagittarius **
--+                             
  |  +----- Hyriopsis_bialata   
  +--+                          
     |  +-- Hyriopsis_desowitzi 
     +--+                       
        +-- Rectidens           

Dai et al., 2023 [Publ 4285], fig. 3-BI

iTtTbiriSoTroTroSiD
11014411--
  +-- Hyriopsis            
--+                        
  +-- Ensidens_ingallsianus **

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

iTtTbiriSoTroTroSiD
11015622--
  +----- Ensidens_ingallsianus **
--+                           
  |  +-- Hyriopsis            
  +--+                        
     +-- Rectidens            

Wu et al., 2024 [Publ 4350], fig. 6-7

iTtTbiriSoTroTroSiD
11013532--
  +----- Ensidens_sagittarius **
--+                          
  |  +-- Rectidens           
  +--+                       
     +-- Hyriopsis           

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

iTtTbiriSoTroTroSiD
11014442--
  +----- Ensidens_sagittarius **
--+                          
  |  +-- Rectidens           
  +--+                       
     +-- Hyriopsis           

Wu et al., 2024 [Publ 4350], fig. 5a

iTtTbiriSoTroTroSiD
11013532--
  +----- Ensidens_sagittarius **
--+                          
  |  +-- Rectidens           
  +--+                       
     +-- Hyriopsis           

Jeratthitikul et al., 2019 [Publ 3911], fig. 4

iTtTbiriSoTroTroSiD
1101800--
-- Ensidens_ingallsianus **

Konopleva et al., 2017 [Publ 3807], fig. 6

iTtTbiriSoTroTroSiD
11013000--
-- Ensidens_sagittarius **

Wu et al., 2024 [Publ 4350], fig. 5b

iTtTbiriSoTroTroSiD
11013532--
-- Ensidens_sagittarius **

Jeratthitikul et al., 2024 [Publ 4387], fig. 1

iTtTbiriSoTroTroSiD
11015822--
  +----- Ensidens_ingallsianus **
--+                           
  |  +-- Hyriopsis            
  +--+                        
     +-- Rectidens            

Zieritz et al., 2024 [Publ 4381], fig. 6A

iTtTbiriSoTroTroSiD
1101221--
  +-- Ensidens_ingallsianus **
--+                        
  +-- Rectidens            

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

iTtTbiriSoTroTroSiD
11015622--
  +----- Ensidens_ingallsianus **
--+                           
  |  +-- Hyriopsis            
  +--+                        
     +-- Rectidens            

Wu et al., 2024 [Publ 4388], fig. 5

iTtTbiriSoTroTroSiD
11013532--
  +----- Ensidens_sagittarius **
--+                          
  |  +-- Rectidens           
  +--+                       
     +-- Hyriopsis           

Wu et al., 2024 [Publ 4350], fig. 5c

iTtTbiriSoTroTroSiD
11013532--
-- Ensidens_sagittarius **

Jeratthitikul et al., 2021 [Publ 4219], fig. 1

iTtTbiriSoTroTroSiD
11013322--
  +----- Ensidens_ingallsianus **
--+                           
  |  +-- Hyriopsis            
  +--+                        
     +-- Rectidens            
 
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