These workers remark that no intergradation was apparent between individuals of the two species obtained in the same trap line.
The specimen shows evidence of intergradation with excubitorides.
Probably this greater breadth is the result of intergradation with M. f. frenata to the westward.
No evidence of intergradation with any other race was noted.
Subspecific assignments have been made only when there is evidence of intergradation.
intergradation is noted also in animals from Schreiber, Ontario.
Consequently it is unlikely that intergradation with other populations could exist at the present time.
intergradation with invicta is shown by specimens from southwestern Montana.
The intergradation between cicognanii and richardsonii is gradual.
intergradation with neomexicana is suggested by one specimen, no. 7936, Univ.