Tropicals & Tender Perennials: Brug Eater?, 1 by Badseed

Badseed wrote:
I am going to post this in ID as well, but wondered if any of you know what it is? I had three of them on my biggest brug this morning and all my brug leaves are starting to look like swiss cheese! They are about two inches long and leave behind quite a bit of excrement. While I am here, this plant look like it has a Y or is close to getting one? It is the one from Brugie which is now over four feet tall.