Trapinch

In Astra, Trapinch has a Bug/Steel-type regional form. It evolves into Astrian Vibrava starting at level 35, which evolves into Astrian Flygon starting at level 45.

The jungles of Astra caused it to develop tough metal armor, and metal apparatus in its throat. This allows it to screech at a high pitch, repelling would-be predators.