clearwing moth mimicking a wasp in flight and at rest
- Size
- Length: 1.5–2.5 cm
- Lifespan
- 1–2 years
- Diet
- Larvae bore into stems of currants, gooseberries and other soft fruits. Adults feed on nectar and do not cause damage. Major pest of berry crops in orchards.
- Habitat
- Orchards, gardens and berry farms. Daytime flyers that are rarely recognised as moths because they look like something much more stinging.
- Range
- Throughout North and South Islands in orchards, gardens and berry farms. Most common in fruit-growing regions like Nelson, Hawkes Bay and Otago.
- Endemism
- Introduced
- Main Threats
- None. This introduced pest is widespread. Controlled in orchards using pheromone traps and targeted insecticides, but faces no conservation threats.
- Population
- An accidental introduction from Europe that has become a widespread resident in New Zealand, particularly where currants and gooseberries are grown.
- Conservation Status
- Not Threatened
The stolen uniform of a predatory wasp. The currant clearwing moth is the master of disguise within the New Zealand garden. Unlike the vast majority of Lepidoptera, their slender wings are mostly transparent, purposefully lacking the dense coating of scales that usually defines a moth's silhouette.
Combined with a dark, narrow body cinched by vibrant yellow bands, this Batesian mimicry serves as a brilliant survival tactic. To a foraging bird, this harmless nectar-feeder is indistinguishable from a stinging social wasp. This illusory safety represents a state of evolutionary brilliance, proving that if you look dangerous enough to the afternoon sun, you do not actually need a sting to navigate the world in peace.
While the adults are the wasps that aren't, their larvae lead a far more discreet existence as internal borers. Living entirely hidden within the pithy stems of currant and gooseberry bushes, they are the invisible nuisance of the orchard, protected from the elements and predators by a fortress of living wood.
This life cycle is a definitive sign of the subtle garden, where the most influential residents are often those that work from the inside out. They represent the power of mimicry, illustrating how a creature can trade the traditional soft-winged moth aesthetic for a high-stakes costume that grants them access to the daylight.
The female lays her eggs on the bark of host plants. The larvae bore into the stems, feeding on the inner tissue and creating galleries that weaken the plant. After several months, they pupate within the stem, and the adult emerges through a hole in the bark.
Not threatened, the currant clearwing is a fascinating study in the balance of exposure and the complexity of garden ecosystems. To encounter a clearwing moth as it pauses on a leaf is to witness a survivor that has mastered the art of Batesian mimicry.