[3] O. hermsi has a multihost lifecycle,[1] and some females have been observed to live four years without any blood meals.

[1] O. hermsi is found in the northwestern region of the United States, including Washington, Oregon, California, Idaho, Colorado, and even northern Arizona and New Mexico.

Wood used for fuel and lumber are common locations, as are hollow pine logs, Douglas firs, and wooden cabins.

[8] Unlike hard-bodied ticks, Ixodidae, O. hermsi feeds on a host for a short period ranging from 15 to 20 minutes.

[3] The a higher transmission of B. hermsii in late-stage nymphs and adult ticks is because they have larger blood meals, so longer feeding times.