Unique shape characterizes this genus, and they are likely ant mimics (3). Head and pronotum black, parts of head and pronotum reddish in the similar C. ludoviciana.
Range
e NA to AZ (AZ-FL-QC-ND) / Mex. / W. Indies - Map(4)(5)
Habitat
in leaf litter, under logs/stones (3), on vegetation in wet areas (6)