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Refuge set aside for this creature. The lowest numbered I've ever seen on a survey day. Hard not to be pessimistic for it's ultimate future.
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Almost extinct.
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Almost extinct.
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Antioch Sand Dunes, Aug. 30, 2016 USFWS Photo/Steve Martarano Listed as Endangered under the Endangered Species Act, this species is in danger of extinction throughout all or a significant portion of its range. Lange’s metalmark butterfly was historically restricted to sand dunes along the southern bank of the Sacramento-San Joaquin River, and is currently found only at Antioch Sand Dunes in Contra Costa County. Most of the habitat is now part of the Antioch Dunes National Wildlife Refuge (administered by the Don Edwards San Francisco Bay National Wildlife Refuge Complex). Recent population counts have ranged from several hundred to more than a thousand individuals. However, a steeply declining trend in the last 10 years, with a peak flight count of only 45 individuals in 2006 led to the implementation of several recovery actions, including aggressive habitat restoration and captive propagation of the butterfly.
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Antioch Sand Dunes, Aug. 30, 2016 USFWS Photo/Steve Martarano Listed as Endangered under the Endangered Species Act, this species is in danger of extinction throughout all or a significant portion of its range. Lange’s metalmark butterfly was historically restricted to sand dunes along the southern bank of the Sacramento-San Joaquin River, and is currently found only at Antioch Sand Dunes in Contra Costa County. Most of the habitat is now part of the Antioch Dunes National Wildlife Refuge (administered by the Don Edwards San Francisco Bay National Wildlife Refuge Complex). Recent population counts have ranged from several hundred to more than a thousand individuals. However, a steeply declining trend in the last 10 years, with a peak flight count of only 45 individuals in 2006 led to the implementation of several recovery actions, including aggressive habitat restoration and captive propagation of the butterfly.
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An adult female nectaring at Antioch Dunes Buckwheat (Eriogonum nudum var. psychicola), the sole species of larval hostplant.
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Antioch Sand Dunes, Aug. 30, 2016 USFWS Photo/Steve Martarano Listed as Endangered under the Endangered Species Act, this species is in danger of extinction throughout all or a significant portion of its range. Lange’s metalmark butterfly was historically restricted to sand dunes along the southern bank of the Sacramento-San Joaquin River, and is currently found only at Antioch Sand Dunes in Contra Costa County. Most of the habitat is now part of the Antioch Dunes National Wildlife Refuge (administered by the Don Edwards San Francisco Bay National Wildlife Refuge Complex). Recent population counts have ranged from several hundred to more than a thousand individuals. However, a steeply declining trend in the last 10 years, with a peak flight count of only 45 individuals in 2006 led to the implementation of several recovery actions, including aggressive habitat restoration and captive propagation of the butterfly.
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An adult male perching on Antioch Dunes Buckwheat (Eriogonum nudum var. psychicola), the sole species of larval hostplant.
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Antioch Sand Dunes, Aug. 30, 2016 USFWS Photo/Steve Martarano Listed as Endangered under the Endangered Species Act, this species is in danger of extinction throughout all or a significant portion of its range. Lange’s metalmark butterfly was historically restricted to sand dunes along the southern bank of the Sacramento-San Joaquin River, and is currently found only at Antioch Sand Dunes in Contra Costa County. Most of the habitat is now part of the Antioch Dunes National Wildlife Refuge (administered by the Don Edwards San Francisco Bay National Wildlife Refuge Complex). Recent population counts have ranged from several hundred to more than a thousand individuals. However, a steeply declining trend in the last 10 years, with a peak flight count of only 45 individuals in 2006 led to the implementation of several recovery actions, including aggressive habitat restoration and captive propagation of the butterfly.
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An adult male nectaring at Antioch Dunes Buckwheat (Eriogonum nudum var. psychicola), the sole species of larval hostplant.
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An adult female nectaring at Antioch Dunes Buckwheat (Eriogonum nudum var. psychicola), the sole larval hostplant species.
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Photo credit: USFWS
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Antioch Sand Dunes, Aug. 30, 2016 USFWS Photo/Steve Martarano Listed as Endangered under the Endangered Species Act, this species is in danger of extinction throughout all or a significant portion of its range. Lange’s metalmark butterfly was historically restricted to sand dunes along the southern bank of the Sacramento-San Joaquin River, and is currently found only at Antioch Sand Dunes in Contra Costa County. Most of the habitat is now part of the Antioch Dunes National Wildlife Refuge (administered by the Don Edwards San Francisco Bay National Wildlife Refuge Complex). Recent population counts have ranged from several hundred to more than a thousand individuals. However, a steeply declining trend in the last 10 years, with a peak flight count of only 45 individuals in 2006 led to the implementation of several recovery actions, including aggressive habitat restoration and captive propagation of the butterfly.