I am not 100% certain this is H. minitabunda. While I was identifying my other photos (confirmed minitabunda) I learned that there are only three Helpis species in Australia, one is not in range, so this may be the other. From memory, however, this didn't look like the second Helpis species in Sydney. Sorry I don't have more accurate info to hand, but at the time I just took it this was a different colour form. Its behaviour was also different, being far less active and giving me the impression it was on its last legs so to speak.