The spelling with one n was in common use at the time (de Geer says in the description that the specimen was sent to him from 'Pensylvanie'), so the species name based on it cannot be corrected under the rules governing scientific names.

[3] C. pensylvanicus has been identified as an important pollinator of the prairie onion.

[4] Adults of the species are active in late summer and early fall.

[5] Adult C. pensylvanicus may be infected by the fungus Eryniopsis lampyridarum.

[7] With their wings raised, the dead beetles may still attract mates as live males were observed mating with the deceased, infected females, this then transmits spores from one insect-host to another.