20 
Rowland M. Shelley 
Fig. 10. Distributions of S. piger (dots), columbianus (squares), and insulanus 
(stars) in eastern Washington, northern Idaho, western Montana, and south- 
eastern British Columbia. Circles denote literature records of S. piger deemed 
reliable; the question mark denotes a literature record of Scytonotus sp. 
(Causey 1954b) that could be either S. piger or columbianus. 
