References for species Robertus arcticus (Chamberlin & Ivie, 1947)

Species Reference Comment Distribution
Ctenium arcticum Chamberlin & Ivie 1947b: 25, f. 11-13
(PDF not available.)  (Dm). Alaska
Robertus arcticus Brignoli 1983c: 411
(PDF not available.)     
None noted here.
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