Langessa nomophilalis
In 3 days ~40% in a week ~60%
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 Big Cypress National Preserve on a given day, based on 19 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 65th most-seen of the 262 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
February, April–May, August and December
In those months about 20% of wildlife watchers report a Langessa nomophilalis in Big Cypress National Preserve on a given day, against under 5% in January and September–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.
Yes
Of the 2 parks where we can rate Langessa nomophilalis sightings, Big Cypress National Preserve has the highest daily chance: about 10%. Next come Everglades National Park (United States, about 10%).
Same family: Crambidae
The closest relatives of the Langessa nomophilalis that you can see in Big Cypress National Preserve (family Crambidae, Crambid Snout Moths) are Waterlily Leafcutter Moth (about 20%), Reed-Boring Crambid Moth (about 20%) and Watermilfoil Leafcutter Moth (about 20%), 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 Big Cypress National Preserve (19 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.
