At first I thought it was an Aphid but now I have no idea, the attached pictures show the bug in question. It looks very small (pictures are zoomed by approximately 75x) it walks upright and has tiny legs at the bottom. I assume it's a baby something I don't think it's fully grown.
Whoa! I can't tell if that's a bug or not, but it's a cool concept. Tiny upright bugs. Might need to do an illustration of that. haha