Peter, when I was a child, I planned to become an entomologist and even qualified for a special summer tutelage by a professor when I was twelve. I later changed my mind and went into a creative field.
I never stopped to think that the larva in my tank could be an invasive species! I did think about setting it free in my little pond, but decided it might attack my beloved salamanders’ babies, so I flushed it down the toilet. As far as I know, my plants come from a Dutch nursery. But it certainly is fascinating to think the beasties and their eggs that stow away on plants could be invasive species! I didn’t take a photo, so don’t think I could be very helpful to the specialists on that website.