Schlangenrop, Coongenrat and Alutnarat

These are the bug pokemon you'll most likely meet in the wild.
 
Schlangenrop (Caterpie 95% + Ekans 5%): They use their tongue like proboscis to locate flower nectar.
Note: Schlangenrop is based on a species of Costa Rican Caterpillar that has an end ressembling a snake's head. It's also based on the other Caterpillar that has a forked tongue that ressembles the one of a snake.
 
Coongenrat (Metapod + Kakuna): Their shell is extremely fragile but also flexible. It wiggles about to move around. The face pattern is used to frighten off enemies.
 
Alutnarat (Butterfree + Venomoth): Their limbs are solid and can carry heavy objects. There's a frightening face pattern on its wings similar to the hood of an Arbok.