Challenge 33 is a Treehopper bug by Yoshio Tsuda. There are a lot of different looks to these bugs, which resemble thorns for camouflage. I think this one looks kind of like the main picture on the Wikipedia page, but it’s only a side view. The wings aren’t clear on the wiki picture, and this model has the main horn and two side ones that it looks like not all treehopper varieties have.
I like these kind of grid models because of how they collapse. I think I could have done better on the face, but I didn’t want to glue it or something. It’s a little odd being two pieces coming together.