I'd bet that it was eaten by a tomato/tobacco hornworm. Look very closely at any stems and foliage left on the plant. Their frass is quite large and almost looks like rabbit poo. They only eat members of the Solanaceae family, tomatoes, daturas, brugs, eggplants, etc. A single mature hornworm can completely defoliate a good size datura in a single day.

Here is a link that might be useful: {{gwi:502513}}

Yep!!I just picked 14 yes 14.. I don't have a Tomato with a freakin leaf in insight.. Hubby is sooooo Ticked off!!I only offed a couple of them the rest were on the relocation program.. BUT it they come back they are red ant food...I have a paint brush and pollen...LOL They have wiped me out...GRRRRR!!!

Kylie

You are right I took a look and this is what I found
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If you happen to see any little white egg casings (about the size of a rice kernel) attached to the body of those hornworms, don't kill them- Hornworms are hosts to parasitic wasps (Tricogamma, I think) The wasp larva hatch & bore down into the hornworm body, & live off of it, til they emerge and fly away. You might even see a Hornworm body shriveled up with the egg cases still attached..(Ugh, I 'm sorry, so gross!) But it's God's organic way to handle those bad boys!
Good luck!
Kasha77

No white eggs casings no worm in sight either! so it must have left after dinner! good thing it left otherwise it would not have been pretty. So tomorrow I will post a picture of my latest adquisition, another PLUMERIA!!! I got her acouple of weeks ago after drs.appoinment to celebrate small victory, or so I told myself this way I can justify my splurging I got this baby for cheap! 12.00 bucks!I thuoght it was a bargain she is fixing to bloom pretty soon.tomorrow she will be photogenic!!!Marcie

Those tomato horn worms make good fish bait. You may as well get something back since you fed them so well