Pterourus bjorkae is a species of butterfly belonging to the swallowtail family (Papilionidae), discovered and described in 2024 by entomologist Harry Pavulaan.

[1][2] The species name, bjorkae, honors Icelandic singer, songwriter, and environmentalist Björk, to recognize her artistic influence and her contributions to environmental awareness.

Researchers observed distinct phenotypic differences in early spring populations, leading to the classification of this univoltine (single-brooded) taxon as a separate species.

[1] The holotype (female) and allotype (male) specimens of Pterourus bjorkae are deposited at the McGuire Center for Lepidoptera and Biodiversity in Gainesville, Florida.

[2] Pterourus bjorkae is notable for its large size, with an average wingspan of approximately 8.5 centimeters, making it the largest subspecies within its complex.