stink bug releasing a smell that clears the room

Size
Length: 1–1.5 cm
Lifespan
6–12 months
Diet
Herbivorous - feeds on sap from leaves, stems, and fruit of a wide range of plants using its piercing-sucking mouthparts. Can cause discolouration and distortion of plant tissue. Defensive glands produce a characteristic strong odour when disturbed.
Habitat
Found on a wide variety of garden plants, vegetables, and fruit trees. They are the "shield-shaped" sunbathers of the New Zealand summer.
Range
New Zealand - found throughout the North and South Islands in gardens, orchards, vegetable patches, and native forests. Most common in lowland areas with a wide variety of host plants including fruit trees, vegetables, and native shrubs.
Endemism
Native
Main Threats
None significant - native species are widespread and common. Some introduced stink bug species are agricultural pests, but native species face no major conservation threats beyond habitat loss.
Population
While we have many native species, the common Green Stink Bug is a frequent visitor to suburban vegetable patches. They are famous for their "chemical warfare."
Conservation Status
Not Threatened
The Green Stink Bug (Cuspicona simplex) is the "broad-shouldered broadcaster" of the summer garden, defined by a vibrant, leaf-green anatomy and a distinctive, shield-like exoskeleton. These hemipterans are specialized "sap-feeders," utilizing a needle-like rostrum to pierce the vascular tissues of stems and fruits to extract nutrient-rich fluids. While their bright coloration provides effective camouflage among dense foliage, their most formidable biological asset is a pair of specialized scent glands located on the metathorax. When threatened or handled roughly, the Stink Bug can release a pungent, volatile fluid containing aldehydes that produce a sharp, "coriander-like" odor. This "olfactory defense" serves as a potent chemical deterrent, signaling to insectivorous birds and lizards that the bug is unpalatable and likely toxic. These "persistent residents" represent a state of aromatic defiance, illustrating a survival strategy that prioritizes chemical warfare over speed or flight. Their life cycle begins with organized clusters of barrel-shaped eggs glued to the underside of leaves, giving rise to nymphs that undergo a series of colorful molts before reaching their final, monochromatic green adult stage. In the New Zealand context, they are a definitive sign of a "thriving summer garden," frequently associated with tomato vines, beans, and various nightshades. Their presence indicates a high-energy environment where the sap is flowing freely and the sun-drenched realities of the season are in full effect. By converting plant sugars into a complex chemical defense, they bridge the gap between the botanical world and the predatory landscape of the garden. Currently classified as not threatened, Green Stink Bugs are a familiar part of the local invertebrate community, particularly in the warmer regions of the North Island. While they can occasionally cause minor aesthetic damage to ripening fruit, they are largely benign participants in the wider ecosystem, serving as a specialized food source for parasitic wasps that help regulate their numbers. Protecting their role in the environment is a matter of acknowledging the "potent defense" mechanisms that allow different species to coexist in a competitive space. To encounter a Green Stink Bug is to witness a survivor that has mastered the art of "aromatic defiance," a creature that proves that in the insect world, survival often comes down to the strength of one’s boundaries and the pungency of one’s warning.