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Appalachian tiger swallowtail butterfly is a hybrid of two other swallowtails, scientists find

(PhysOrg.com) -- Flitting among the cool slopes of the Appalachian Mountains is a tiger swallowtail butterfly species that evolved when two other species of swallowtails hybridized long ago, a rarity in the ...

Biology / Plants & Animals

created Sep 08, 2011 | popularity 3.7 / 5 (3) | comments 3 | with audio podcast

Hind wings help butterflies make swift turns to evade predators, study finds

(PhysOrg.com) -- New tires allow race cars to take tight turns at high speeds. Hind wings give moths and butterflies similar advantages: They are not necessary for basic flight but help these creatures take tight turns to ...

Biology /

created Jan 07, 2009 | popularity 3 / 5 (1) | comments 0