North American Luna Moth

North American Luna Moth

Actias luna

Daily sighting probability <5% · Rare
at Dallas

In 3 days ~10% in a week ~30%

44 Verified sightings at Dallas
688 In all 6 parks From 2019 to 2026
September Best month
☀️ Diurnal When it's spotted

About the North American Luna Moth

The luna moth (Actias luna), also called the American moon moth, is a Nearctic moth in the family Saturniidae, subfamily Saturniinae, a group commonly named the giant silk moths. The moth has lime-green wings and a white body. Its caterpillars are also green. Its typical wingspan is roughly 114 mm (4.5 in), but wingspans can exceed 178 mm (7.0 in), ranking the species as one of the larger moths found in North America.

Across Canada, it has one generation per year, with the winged adults appearing in late May or early June, whereas farther south it will have two or even three generations per year, the first appearance as early as March in southern parts of the United States.

As defense mechanisms, larvae emit clicks as a warning and can also regurgitate intestinal contents, confirmed as having a deterrent effect on a variety of predators. The elongated tails of the hindwings are thought to confuse the echolocation detection used by predatory bats.

A parasitoid fly deliberately introduced to North America as a biological pest control for the invasive species spongy moth (also known as gypsy moth) appears to have had a negative impact on luna moths and other native moths. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Isle Royale National Park 🇺🇸 United States
~40%
2 Great Smoky Mountains National Park 🇺🇸 United States
~30%
3 Congaree National Park 🇺🇸 United States
~30%
4 Acadia National Park 🇺🇸 United States
~30%
5 Shenandoah National Park 🇺🇸 United States
~20%
6 Cape Breton Highlands National Park 🇨🇦 Canada
~20%

Cities Where Found

# City Country Daily sighting probability
1 Washington 🇺🇸 United States
~10%
2 Baltimore 🇺🇸 United States
~10%
3 Orlando 🇺🇸 United States
~10%
4 Philadelphia 🇺🇸 United States
~10%
5 Austin 🇺🇸 United States
<5%
6 Dallas 🇺🇸 United States
<5%
7 Houston 🇺🇸 United States
<5%
8 New York City 🇺🇸 United States
<5%
9 Chicago 🇺🇸 United States
<5%
10 Boston 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a North American Luna Moth in Dallas?

Rare

Under 5% of wildlife watchers report a North American Luna Moth sighting in Dallas on a given day, based on 44 verified sightings from GBIF citizen-science data. It is the 407th most-seen of the 1412 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.

When is the best time to see a North American Luna Moth in Dallas?

March and September

In those months about 10% of wildlife watchers report a North American Luna Moth in Dallas on a given day, against under 5% in April–August and October–February, the lowest months.

What time of day is best to see a North American Luna Moth?

Between noon and 3 pm

Across all the parks we cover, that three-hour window holds the most North American Luna Moth sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Is Dallas the best place to see a North American Luna Moth?

6th of 12

Of the 12 cities where we can rate North American Luna Moth sightings, Dallas ranks 6th at under 5%. The best odds are in Washington (United States, about 10%), Baltimore (United States, about 10%) and Orlando (United States, about 10%).

Where does the North American Luna Moth sighting chance come from?

GBIF citizen-science records

It is estimated from how often the North American Luna Moth is recorded against all the insects logged in Dallas (44 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

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