Valid Names Results 
Pygmaeococcus McKenzie, 1960  (
Rhizoecidae)
 Nomenclatural History 
    -  Pygmaeococcus 
    
    
    McKenzie 
    1960: 741.
     
        Type species: Pygmaeococcus morrisoni McKenzie 
     
     
        by monotypy and original designation        
    
    .
    
    accepted valid name
    
    
    
 
 Remarks 
    
        -  Systematics: Subtribe Ripersiellina (Kozár, 2007)   is distinguished from all other genera of Rhizoecini by the presence of dome-shaped tubular ducts. (Kozár and Konczné Benedicty, 2007), 
 
    
    
    
    
    
        -  General Remarks: Definition and characters by McKenzie (1960, 1967), Williams (1998) and by Kozár & Konczné Benedicty (2007). 
 
    
    
Keys
    -  KozarKo2007: pp.360 
    
    (
    
    Adult (F)
     
    )
    
    [Genera of subtribe Ripersiellina] 
 
    -  KozarKo2005: pp.146-147 
    
    (
    
    Adult (F)
     
    )
    
    [Genera of Rhizoecinae] 
 
    -  KozarFo2004: pp.180-181 
    
    (
    
    Adult (F)
     
    )
    
    [Genera of Rhizoecini] 
 
    -  KozarKo2002a: pp.217 
    
    (
    
    Adult (F)
     
    )
    
    [genera of Rhizoecini] 
 
    -  McKenz1967: pp.46 
    
    (
    
    Adult (F)
     
    )
    
    [North America] 
 
    
 Associated References
    -  BenDov1994: 
     catalog,   pp. 433  
 
    -  KozarFo2004: 
     taxonomy,   pp. 180-181  
 
    -  KozarKo2002a: 
     taxonomy,   pp. 217  
 
    -  KozarKo2005: 
     taxonomy,   pp. 146-147  
 
    -  KozarKo2007: 
     description,  taxonomy,   pp. 360,377  
 
    -  McKenz1960: 
     description,  taxonomy,   pp. 741  
 
    -  McKenz1967: 
     description,  taxonomy,   pp. 366  
 
    -  MorrisMo1966: 
     taxonomy,   pp. 171  
 
    -  Willia1998DJ: 
     description,  taxonomy,   pp. 28  
 
   
2 Species