Sunday, February 12, 2012

World's Heaviest Critter VS World's Smallest Vertebrate

The world's heaviest insect-the giant weta, tipped the scales at 71 grams. And the world's smallest vertebrate-Paedophryne amauensis, weighs only 0.02 grams.

So the world's heaviest insect is roughly 3,500 times heavier than the world's smallest back-boned animal.

The world's heaviest insect, the giant weta (left), enjoying a carrot. And the world's smallest vertebrate, Paedophryne amauensis (right) on a dime. Image: 
The frog was found only recently (December 2011) in Papua New Guinea.
Wetas can reach 10 centimeters in body length, 20 with their legs extended. The frog is about 7 millimeters long, so it would take around 30 of the frogs lined up head to tail to extend the length of the weta.--
A P. amanuensis on U.S. dime (diameter 17.91 mm). Image: Ecological Guild Evolution and the Discovery of the World’s Smallest Vertebrate, Eric N. Rittmeyer et al. , PLoS ONE, DOI: 


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