Rehan and Richards 



JESO Volume 139, 2008 



Females 



1. Front tibia with a basal ivory stripe; small (body length 5-6 mm) (Figure 4a) 



C. strenua Smith 



Front tibia with at most a basal ivory spot; usually larger (body length 7 mm or more) 

 (Figure 4b) 2 



2. One to two complete and up to four incomplete longitudinal rows of punctures inside 

 parapsidal lines and around medial line; area between medial line and parapsidal 

 lines always punctate in posterior half of mesoscutum (Figures la and 5a) 



C. dupla Say 



One to two incomplete longitudinal rows of punctures inside the parapsidal lines 

 and on either side of the medial line; areas between medial line and parapsidal lines 

 usually impunctate with, at most, a couple of central punctures in posterior half of 

 mesoscutum (Figures lb, 5b) C. calcarata Robertson 



Acknowledgments 



The assistance of Mark Frampton was invaluable in both the field and the lab. We 

 thank Doug Currie and Chris Darling for allowing us to use the Royal Ontario Museum's 

 microscope imaging system, Glenda Hooper for producing the SEM images, and all those 

 volunteers who cheerfully tested the key. This study was supported by research funding 

 from NSERC and Brock University to MHR, and by NSERC Undergraduate Summer 

 Research and Brock University Student Research Awards to SMR. 



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