Papilio indra fordi
This small swallowtail was described from the Granite Mountains northeast of Apple Valley after a collector - Robert Ford - found them there in 1951 and recognized that they were different. This isn't the only place to look for it, but it is the best-known. Fordi also flies in the Coxcomb Mountains in eastern-most Joshua Tree National Park, but that range is nearly inaccessible. They are in a few other nearby ranges, but to the east in the Providence Mountains we have subspecies martini.
Fordi use Cymopterus panamintensis var aucutifolius as the larval food plant, and I have heard that it strongly prefers this specific variety.