The Luna Moth (Actias luna), also known as the American moon moth, is a stunning Nearctic species in the Saturniidae family (giant silk moths). It features vibrant lime-green wings, a white hairy body, and long, trailing tails on the hindwings. Its caterpillars are also green and equipped with subtle defenses.
Adults typically have a wingspan of about 114 mm (4.5 inches), though it can reach up to 178 mm (7 inches) in exceptional cases, making it one of North America's largest moths.
In Canada and northern regions, luna moths produce one generation per year, with adults emerging in late May or early June. Farther south in the United States, they can have two or even three generations annually, with the first adults appearing as early as March.
For defense, the larvae emit warning clicks with their mandibles and regurgitate foul intestinal contents to deter predators. The adult moth's elongated hindwing tails help disrupt bat echolocation, while eyespots on the wings may confuse or startle attackers.
Unfortunately, a parasitoid fly (Compsilura concinnata), introduced to North America to control the invasive spongy moth (formerly gypsy moth), has negatively impacted luna moths and other native saturniid species by parasitizing their larvae and pupae.
My sister-in-law sent me a photo of this moth. I immediately generated the AI version above.
