As for what sort of insect species? I'm thinking a Mantis for something different. Likely due to being an insect he would be more bottom heavy, but still have a nice gut. Hard to say if he would be more feminine like the T-Rex Knight, since an eager submissive would be an interesting option to have on the table. Anyways, I hope that we don't get an 11th reptile without having the other 10 have a bit more development. Even if the insect isn't what I imagine, I'll be excited to see him nonetheless!
Anyways, cheers for the soon to release next update!