Giant wood wasp may appear intimidating, but the sawfly is harmless to humans. It only resembles a large wasp, but the long ovipositor is not used for stinging. Instead, females use the stinger-like appendage to poke holes in trees. The holes are used to incubate the eggs and protect the larvae during development.

White-Horned Horntail harbors an intriguing trait: it lays eggs inside wood, a rare behavior among insects. This means forests' health can be inferred from white-Horned Horntail's thriving, indicating an ecosystem with plentiful dead or decaying wood. Also, adult white-Horned Horntail's extract nutrients from tree sap, inadvertently helping control tree diseases. This dual-role as a bio-indicator and natural pest controller underlines white-Horned Horntail's substantial influence in its ecosystem.