This species is similar to "Peromyscus maniculatus". The mouse is virtually identical in appearance to the closely related species "Peromyscus maniculatus". Rodent hepacivirus is found in the deer mouse ("Peromyscus maniculatus"). Peromyscus maniculatus is a rodent native to North America. Native land vertebrates are few, including the deer mouse "Peromyscus maniculatus" and some lizards. One complicating factor was the presence of the native deer mouse subspecies ("Peromyscus maniculatus anacapae"). Overwintering "Urophora" larvae are heavily preyed upon by deer mice "Peromyscus maniculatus". "Peromyscus maniculatus" are found in places including Alaska, Canada, and parts of South America. Seeds produced are sometimes taken and consumed by deer mice ("Peromyscus maniculatus" ssp. "exilis").