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This Butterfly Was the First in North America That People Made Extinct
New research suggests the iconic Xerces blue butterfly may have been its own species.
The 93-year-old Xerces blue butterfly specimen, located in the collections of the Field Museum in Chicago, used in the study.Credit.The Field Museum
July 21, 2021
More than a century ago, a bluish butterfly flitted among the sand dunes of the Sunset District in San Francisco and laid its eggs on a plant known as deerweed. As the city’s development overtook the dunes and deerweed, the butterflies vanished, too. The last Xerces blue butterfly was collected in 1941 from Lobos Creek by an entomologist who would later lament that he had killed what was one of the last living members of the species.
A famous blue butterfly: Still extinct but more distinct
A collections drawer of extinct Xerces blue butterflies at the Field Museum in Chicago. New research suggests the iconic Xerces blue butterfly may have been its own species. The Field Museum via The New York Times.
by Sabrina Imbler
(NYT NEWS SERVICE)
.- More than a century ago, a bluish butterfly flitted among the sand dunes of the Sunset District in San Francisco and laid its eggs on a plant known as deerweed. As the citys development overtook the dunes and deerweed, the butterflies vanished, too. The last Xerces blue butterfly was collected in 1941 from Lobos Creek by an entomologist who would later lament that he had killed what was one of the last living members of the species.
A Famous Blue Butterfly: Still Extinct but More Distinct nytimes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from nytimes.com Daily Mail and Mail on Sunday newspapers.
Frank Dunnigan, WNP member and columnist. -
If ever there was a Streetwise column that could make readers sit up and say, “Really?” then this is the one.
San Francisco, built on a series of hills, has been laced with tunnels for many, many decades. Some are heavily used, some less frequently, some have completely vanished from the scene and some never made it off the drawing boards.
For our purposes, it is necessary to exclude most sewage tunnels yes, they exist and they are certainly the most common form of tunnel beneath our streets but here, we will focus on those that were designed for legal public access by railroads, vehicles, and/or pedestrians.