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Thoas swallowtail caterpillar

Heraclides thoas


This caterpillar is showing its osmeterium.


"The osmeterium is a defensive organ found in all Papilionid larvae, in all stages. The organ is situated in the prothoracic segment and can be everted when the larva feels threatened. The everted organ resembles a fleshy forked tongue not unlike a snake tongue and this along with the large eye like spots on the body might be used to startle birds and small reptiles. The osmeterial organ remains inside the body in the thoracic region in an inverted position and is everted when the larva is disturbed in any way emitting a foul, disagreeable odor which serves to repel ants, small spiders and mantids." (Wikipedia).

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SukanyaDatta 6 years ago

Depending on which end you focus looks either like a snake or bird droppings...incredible survival tricks. Thank you,Sergio Monteiro.

DrNamgyalT.Sherpa 6 years ago

Sergio, OMG! Who creates them!

CalebSteindel 6 years ago

just keep them coming, incredible...

Sergio Monteiro
Spotted by
Sergio Monteiro

Curitiba, PR, Brazil

Spotted on Jun 2, 2015
Submitted on Jun 4, 2015

Spotted for Mission


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