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Papilio polyxenes - Black Swallowtail Caterpillar When provoked, the larvae of this species sprout eversible orange horns called osmeterium, which release a foul odor in order to deter predators. The osmeterium is a defensive, glandular organ that is coated in stinky chemicals, and is located at the base of the caterpillar&#039;s head. The osmeterial odor changes between species and within the life stages of the caterpillars. <br />
<br />
This particular caterpillar&#039;s osmeterium smelled like apples. You can actually see bits of the stinky fluid dripping off the osmeterium in this photo!<br />
<br />
Habitat: On fennel (Foeniculum sp.) in a rural garden<br />
<figure class="photo"><a href="https://www.jungledragon.com/image/83301/eastern_black_swallowtail_caterpillar_-_papilio_polyxenes.html" title="Eastern Black Swallowtail Caterpillar - Papilio polyxenes"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3232/83301_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1616630410&Signature=KWFaee6%2F4Mn6VtOMgRnRvZ9hNFI%3D" width="200" height="154" alt="Eastern Black Swallowtail Caterpillar - Papilio polyxenes When provoked, the larvae of this species sprout eversible orange horns called osmeterium, which release a foul odor in order to deter predators. The osmeterium is a defensive, glandular organ that is coated in stinky chemicals, and is located at the base of the caterpillar&#039;s head. The osmeterial odor changes between species and within the life stages of the caterpillars. <br />
<br />
This particular caterpillar&#039;s osmeterium smelled like apples. You can actually see bits of the stinky fluid dripping off the osmeterium in this photo!<br />
<br />
Habitat: On fennel (Foeniculum sp.) in a rural garden<br />
https://www.jungledragon.com/image/83300/papilio_polyxenes_-_black_swallowtail_caterpillar.html<br />
 Black Swallowtail,Geotagged,Papilio polyxenes,Summer,United States,caterpillar" /></a></figure> Black Swallowtail,Geotagged,Papilio polyxenes,Summer,United States,caterpillar,osmeterium,papilio Click/tap to enlarge Promoted

Papilio polyxenes - Black Swallowtail Caterpillar

When provoked, the larvae of this species sprout eversible orange horns called osmeterium, which release a foul odor in order to deter predators. The osmeterium is a defensive, glandular organ that is coated in stinky chemicals, and is located at the base of the caterpillar's head. The osmeterial odor changes between species and within the life stages of the caterpillars.

This particular caterpillar's osmeterium smelled like apples. You can actually see bits of the stinky fluid dripping off the osmeterium in this photo!

Habitat: On fennel (Foeniculum sp.) in a rural garden

Eastern Black Swallowtail Caterpillar - Papilio polyxenes When provoked, the larvae of this species sprout eversible orange horns called osmeterium, which release a foul odor in order to deter predators. The osmeterium is a defensive, glandular organ that is coated in stinky chemicals, and is located at the base of the caterpillar's head. The osmeterial odor changes between species and within the life stages of the caterpillars. <br />
<br />
This particular caterpillar's osmeterium smelled like apples. You can actually see bits of the stinky fluid dripping off the osmeterium in this photo!<br />
<br />
Habitat: On fennel (Foeniculum sp.) in a rural garden<br />
https://www.jungledragon.com/image/83300/papilio_polyxenes_-_black_swallowtail_caterpillar.html<br />
 Black Swallowtail,Geotagged,Papilio polyxenes,Summer,United States,caterpillar

    comments (7)

  1. Excellent shot, whoa! Posted one year ago
    1. Thanks! Posted one year ago
  2. Cutie pie! Posted one year ago
    1. And, it was so reactive. I only touched the stem it was on and it popped out its horns! Posted one year ago
  3. Super nice shot! Posted one year ago
    1. Thank you! Posted one year ago
  4. Today's Facebook post:

    We’re moving on this week to focus on incredible creatures with unique features that are not found in humans! There are some pretty wild body parts found in nature! #JungleDragon

    Check out our growing 'Creature Features' list:

    OSMETERIUM
    When provoked, a black swallowtail caterpillar (Papilio polyxenes) rears up and sprouts its osmeterium, which resembles a forked snake's tongue and is a great defensive tactic to startle predators. This glandular organ also releases a pungent odor, which reeks like rancid fruit. {Spotted in Connecticut, USA by Christine Young} #Papiliopolyxenes #blackswallowtailcaterpillar #osmeterium

    https://www.facebook.com/jungledragonwildlife
    Posted 9 days ago

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The Black Swallowtail , also called the American Swallowtail or Parsnip Swallowtail, is a butterfly found throughout much of North America. It is the state butterfly of Oklahoma. An extremely similar-appearing species, ''Papilio joanae'', occurs in the Ozark Mountains region, but it appears to be closely related to ''Papilio machaon'', rather than ''P. polyxenes''.

Similar species: Moths And Butterflies
Species identified by Christine Young
View Christine Young's profile

By Christine Young

All rights reserved
Uploaded Aug 17, 2019. Captured Aug 17, 2019 08:03 in 91 Main St, Sharon, CT 06069, USA.
  • Canon EOS 80D
  • f/9.0
  • 1/197s
  • ISO400
  • 100mm