Checked some wikipedia:
And here are some ideas.
1-As you see, some butterflies use camouflage to evade predators, you could turn that into a power.
2-Also, some butterflies are agents of pollination. You could make Hugo able to shoot pollen.
3-I know the cocoon is from earlier stages before a caterpillar becomes a butterfly, but what about a cocoon shield?
Also a bonus tip: sometimes you can make a character even more interesting by making them use their established powers in smart and/or unconventional ways. For example, spiderman used his webs in many ways. He uses them to catch enemies, to swing like Tarzan around the city, to make a safety net, to catch things outside his reach, to set traps, etc.
Hope this helps!
