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Post by foxxdoc on May 6, 2021 8:53:46 GMT -8
Kind of a reverse situation.
Citrus not native to US and only around a few hundred years. yet we had Cresphontes.
normally the bug is the new guy on the block and infests existing native flora.
Just a hanging thought.
Best
Tom
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Post by gaspipe on May 6, 2021 16:53:29 GMT -8
You just blew my mind
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Post by livingplanet3 on May 6, 2021 17:55:14 GMT -8
True that the genus Citrus is not native to the US, but we do have two native species of Zanthoxylum which like Citrus, are also members of the family Rutaceae, and important host plants of P. cresphontes. Zanthoxylum americanum is common in my area, and if the leaves are crushed, they give off a very characteristic citrus odor (not so much like orange or lemon, but more pungent, similar to the smell of limonene).
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Post by Paul K on May 6, 2021 19:24:02 GMT -8
Papilio cresphontes feeds not only on citrus plants. It is common species here in Ontario and I can insure you citrus doesn't grow here  . I don't know what they feed on here in Ontario but it might be some new species of plant or maybe Prickly ash. |
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Post by eurytides on May 7, 2021 6:19:50 GMT -8
They feed on Z. americanum in Ontario.
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Post by exoticimports on May 7, 2021 8:54:24 GMT -8
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Post by livingplanet3 on May 7, 2021 9:11:35 GMT -8
There are actually more US species of Zanthoxylum than I'd realized (although only a few are widespread), and judging from these range maps, as well as photos, the species in my area is probably Z. hirsutum. |
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Post by foxxdoc on May 11, 2021 10:17:03 GMT -8
Z.americanum is indeed what the foodplant is. (Prickly Ash). found in central Florida.
Have found larva on it.
A Story: A number of years I had a call from USDA wanting to inspect my Wampii Tree. I had one in the greenhouse. I was in a hurry and told the agent to go ahead on her own. She had never seen one. I guided her to it and she explained that she was checking all Wampii trees and there was a relationship between Wampii and Citrus disease.
Never had cresphontes on the Wampii . Don"t know if cresphontes is an eater in Wampii groves where ever they are !!!
Best
TOM
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Post by Adam Cotton on May 11, 2021 13:02:32 GMT -8
The Wampii Tree is Clausena lansium, a SE Asian Rutaceae species. I have several in my garden. Occasionally Papilio memnon will lay an egg on it but it is not a main foodplant for Papilio species here so I am not surprised that P. cresphontes won't eat it.
Adam.
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Post by foxxdoc on May 12, 2021 6:37:35 GMT -8
Adam: I thought I might here from you because of locale of Wampii.
I never saw any predation on Wampii because it never left my greenhouse. We have Wampii groves here in Florida though I've never seen them. But apparently they don "t have an issue with disease that might affect our Citrus.
Best
Tom |
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