Male. Subspecies is an approximation. It is definitely not ssp. neumoegeni from the low desert. Common and fresh but few females.
Thinking desert marble because of habitat. It was in dry, rocky, mountain brush/PJ habitat with some ponderosa pine.
Baird's Swallowtail ButterflyGrand Canyon Village, GRCA, AZ, May 4, 1948, L. Schallbach
Grand Canyon Museum Collection
2 Albright Ave, Grand Canyon Village, AZ 86023
Phone: (928) 638-7769
https://www.nps.gov/grca/learn/historyculture/muscol.htm
Black Swallowtail Papilio polyxenes
Found after dark on the cement below a street light. Temperatures were warmer today and likely caused this guy to emerge early
Last instar larva on pellitory-of-the-wall.
It is pupa on right.