This little lady/fellow is on my tomato plants which are next to my butterfly plants I bought to attract monarchs.....no, I have no eggs on them, just bugs. Anyhow, I noticed this thing and would love to know what it is.

That is a tomato hornworm. It is the larval stage of the Carolina sphinx moth. Those are the eggs of a wasp that uses the hormworm as a host.

Cotesia congregata parasitoid wasp

http://entnemdept.ufl.edu/crea...

and this is their favorite prey

https://en.wikipedia.org/wiki/...

It looks like a parasitized tomato hornworm - some pics:

https://www.google.ca/search?q...

Nature doing a great job!

Certainly loved eating my tomato plants. Now wasps ????? Good thing we have a Christmas Tree Farm and not a veggie farm.