Langessa nomophilalis
In 3 days ~20% in a week ~30%
Langessa is a genus of moths of the family Crambidae. It contains only one species, Langessa nomophilalis, the black langessa moth, which is found in North America, where it has been recorded from Alabama, Florida and South Carolina.
The wingspan is 20–22 mm. The forewings are brown with a bronzy reflection. The hindwings are grey brown with three black patches on the inner margin and two faint white submarginal lines. Adults have been recorded on wing year round.
The larvae feed on aquatic plants. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Langessa nomophilalis sighting in Everglades National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 238th most-seen of the 496 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
February–April, June, September and November–December
In those months about 10% of wildlife watchers report a Langessa nomophilalis in Everglades National Park on a given day, against under 5% in January, May, July–August and October, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Langessa nomophilalis sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 2 parks where we can rate Langessa nomophilalis sightings, Everglades National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Big Cypress National Preserve (United States, about 10%).
Same family: Crambidae
The closest relatives of the Langessa nomophilalis that you can see in Everglades National Park (family Crambidae, Crambid Snout Moths) are Orange-Spotted Flower Moth (about 10%), Watermilfoil Leafcutter Moth (about 10%) and Coffee-Loving Pyrausta Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Langessa nomophilalis is recorded against all the insects logged in Everglades National Park (14 verified sightings from 2019 to 2026), 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.
