Tigers on Market Street: Butterfly Habitat Along a Busy Corridor | SF

Submitted by the Event Organizer

As the city re-imagines our grandest boulevard with the Better Market Street Project, join and learn about a creature that seems to be keeping up in this human-altered landscape.

Lepidopterists and artists Amber Hasselbring and Liam O’Brien will “tell the tale of a swallow-tail” and propose novel ideas of connecting the two species.

Not long after the transit tunnels of Muni and Bart went in below Market Street in the 1970s, a San Franciscan butterfly—the western tiger swallowtail (Papilio rutulus) discovered an ecosystem freshly lined with one of its larval food trees: the London plane sycamore (Plantanus acerifolia). Males fly among the treetops, females lay eggs on the leaves, caterpillars feed and pupate, and adult butterflies emerge. This creature’s entire lifecycle has played out for years unheralded by the thousands who walk below this canopy daily.

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