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I'd catapeler #807460

Asked August 22, 2022, 1:06 PM EDT

Identify this catapeler. It's olive green with black stripes. On black stripes there are white & reddish dots. Bristles on black stripes. There are numerous catapeler eating leaves on licorice plant.

Ashtabula County Ohio

Expert Response

A verbal description is not adequate for anyone to be able to identify a creature. So, to be honest, I don’t know what you have. However, I’m going to offer two possibilities, bot of which are caterpillars that might be seen on fennel (I’m assuming your licorice plant is fennel), and both of which are the larval forms of beautiful butterflies. If either of these is correct, I hope you will allow them to share your plants and complete their life cycles.

You might be seeing the larval form of the American Lady butterfly. Read about it and see pictures of it by following this link:


American Lady | Missouri Department of Conservation (mo.gov)


A common caterpillar on fennel is the larval form of the Swallowtail butterfly.  It doesn't have bristles, however.  You can see it and read about it by following this link:


Fennel - Advice From The Herb Lady


If neither of those is what you are seeing, please feel free to resubmit your query along with a couple of good, clear, close-up photos.



Hope this picture helps identify the caterpillar

On Wednesday, August 24, 2022, Ask Extension <<personal data hidden>> wrote:
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Dear Mark, here's the response to your question:

A verbal description is not adequate for anyone to be able to identify a creature. So, to be honest, I don’t know what you have. However, I’m going to offer two possibilities, bot of which are caterpillars that might be seen on fennel (I’m assuming your licorice plant is fennel), and both of which are the larval forms of beautiful butterflies. If either of these is correct, I hope you will allow them to share your plants and complete their life cycles.

You might be seeing the larval form of the American Lady butterfly. Read about it and see pictures of it by following this link:


American Lady | Missouri Department of Conservation (mo.gov)


A common caterpillar on fennel is the larval form of the Swallowtail butterfly.  It doesn't have bristles, however.  You can see it and read about it by following this link:


Fennel - Advice From The Herb Lady   


If neither of those is what you are seeing, please feel free to resubmit your query along with a couple of good, clear, close-up photos.




Need to reply to the expert? Click the link below, or simply reply to this email.

Click here to view #0077391

Jane K.

If you would like to learn more, check out these resources:

BYGL Newsletter:  http://bygl.osu.edu/

OSUE Factsheets:  http://ohioline.osu.edu

State Master Gardener Volunteer website:  http://mastergardener.osu.edu


We hope this response has sufficiently answered your questions. If not, please do not send another email. Instead, reply to this email or login to your account for a complete archive of all your support requests and responses.

The Question Asker Replied August 26, 2022, 1:50 PM EDT
The picture you attached comes through as fuzzy, but I think your caterpillar is a larval form a black swallowtail butterfly.   The link below will take you to pictures of the various instars (stages) of the caterpillar prior to pupation.  It gives lots of information about the life stages as well as pictures of regular and unusual looking caterpillars that are also black swallowtails.  I hope this is of help.  


Black Swallowtail - Papilio polyxenes (butterflygardeningandconservation.com)
Thank you for replying to our questions, the information you sent was very good. They were the black swallowtails butterfly. Thanks again! 

On Friday, September 2, 2022, Ask Extension <<personal data hidden>> wrote:
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Dear Mark, here's the response to your question:

The picture you attached comes through as fuzzy, but I think your caterpillar is a larval form a black swallowtail butterfly.   The link below will take you to pictures of the various instars (stages) of the caterpillar prior to pupation.  It gives lots of information about the life stages as well as pictures of regular and unusual looking caterpillars that are also black swallowtails.  I hope this is of help.  


Black Swallowtail - Papilio polyxenes (butterflygardeningandconservation.com)

Need to reply to the expert? Click the link below, or simply reply to this email.

Click here to view #0077391

Jane K.

If you would like to learn more, check out these resources:

BYGL Newsletter:  http://bygl.osu.edu/

OSUE Factsheets:  http://ohioline.osu.edu

State Master Gardener Volunteer website:  http://mastergardener.osu.edu


We hope this response has sufficiently answered your questions. If not, please do not send another email. Instead, reply to this email or login to your account for a complete archive of all your support requests and responses.

The Question Asker Replied September 04, 2022, 12:15 PM EDT
You are most welcome.

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