SAVING THE ISLAND MARBLE BUTTERFLY
A beautiful white and green butterfly with a marbled hind wing, the island marble once fluttered about in the open grasslands and Garry oak woodlands of Washington’s San Juan Islands and Canada’s Gabriola and Vancouver Islands. Last seen in 1908, it was believed extinct until a small population was found 90 years later in the San Juan Island National Historical Park. Scientists believe this is the only viable population of island marble butterflies in the world — one catastrophic event could wipe out the whole population.
The Service finally took action in February 2006, acknowledging that the petition was warranted and beginning a review of the butterfly’s status. But in November 2004, the Service denied the petition, concluding that the butterfly does not require protection. The agency claimed that enough populations of the island marble existed to justify its listing denial, but scientists argue that only one of these populations is viable.
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