References for species Robertus borealis (Kaston, 1946)

Species Reference Comment Distribution
Ctenium borealis Kaston 1946: 6, f. 41-43, 50
  (Dmf). USA, Canada
Robertus borealis Brignoli 1983c: 411
(PDF not available.)     
Robertus borealis Paquin & Dupérré 2003: 218, f. 2432-2434
(PDF not available.)  (mf).  
None noted here.
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