Heraclides (Papilio) cresphontes

ruins of Uxmal.
I found a good article to tell it apartfrom the very similar H. rumiko:
https://www.researchgate.net/publication/271221880_A_new_Heraclides_swallowtail_Lepidoptera_Papilionidae_from_North_America_is_recognized_by_the_pattern_on_its_neck

115546Geotagged
30Giant Swallowtail
961Mexico
30Papilio cresphontes
30487summer

The Giant swallowtail

The giant swallowtail is the largest butterfly in North America. It is abundant through many parts of eastern North America; populations from western North America and down into Panama are now considered to belong to a different species, "Papilio rumiko".

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Similar species: Moths And Butterflies

Species identified by Patomarazul