An email conversation with an entomologist from New South Wales prompted the addition of a paragraph (in bold) to this article from about a year ago.
I picked a tomato off the bush the other day and noticed a little hole in it. I cut it open and saw that the contents were looking a bit ordinary, as if it was about to rot. Under higher magnification I could see the culprits – fly larvae – yep, maggots! The image below shows a close-up of one.