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Return to Main Key Index
| Section: Vespertilionidae |
Option A
The last bone in the third digit of the wing is approximately three times the length of the bone next to the last bone, such that the wing can fold back on itself.
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©P. Lai |
Option B
The last bone in the third digit of the wing is not more than twice the length of the bone next to the last bone.
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©P. Lai |
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