They're done! The squishy little (relatively speaking) murder machines are ready to take on the miscellaneous mega-fauna and threatening insects of their world. Hopefully I can make some pieces with some of the other species that inhabit their world, insect and otherwise.
List of each species and their job/specialty left to right:
Cabbage Tree Emperor Caterpillar- Intimidation and negotiations expert, trained in cross species negotiations
Peacock Butterfly Caterpillar- stealth expert, specializes in treetop combat against problematic mega-fauna
Sycamore Tussock Moth- Chemistry and apothecary specialist, makes mixtures to help and harm, generalist
Jewel Caterpillar- Ranged escort and hunter, specializes in protecting merchant and citizen caravans
Death's Head Hawkmoth: Shellbreaker, expert in eradicating territorial, durable, pestilent and extremely dangerous mega-fauna
Hickory Horned Devil Caterpillar: Hand-to-Hand combat expert, used to specialize in bug-to-bug combat and assassination but retired from front-line work when the treaties were established they now work as a self defense teacher for both Battlepillars-in-training and citizen insects, has probably committed war crimes
Caterpillars (lepidopterans in general really) are a mercenary race renowned for both their combat prowess and the negotiation skills/training that allow them to navigate both civil and wild confrontations.
They are quite tough and are considered adults well before hitting sexual maturity as that doesn't happen until almost the end of their life cycle. Once they hit sexual maturity near the end of their lives they metamorphose into butterflies and migrate for mating. Most butterflies can return home after migration but some butterflies choose not to migrate and continue to work as messengers, scouts and aerial support without reproducing.
They are begrudgingly tolerated if not respected by all insect species as they've played a huge part in eradicating mega-fauna from settled and arable lands and keep trading lines safe enough for to consistently travel along.