Ethmia delliella
In 3 days ~20% in a week ~40%
Ethmia delliella, the ladder-backed ethmia moth, is a moth in the family Depressariidae. It is found from the Gulf region of Texas and Mexico to the west coastal plain of Mexico, Chiapas, El Salvador and Costa Rica. The length of the forewings is 9–12 mm (0.35–0.47 in). The ground color of the forewings is white with black markings, reflecting metallic steel blue. The ground color of the hindwings is white, becoming slightly to strongly brown toward the apex. Adults are on wing from March to October in Texas and from April to August elsewhere. There are probably multiple generations per year.
The larvae feed on Ehretia elliptica and Cordia alliodora. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monterrey | 🇲🇽 México | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | San Antonio | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Ladder-Backed Ethmia Moth sighting in Austin on a given day, based on 97 verified sightings from GBIF citizen-science data. It is the 308th most-seen of the 1624 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March–July and September–October
In those months about 10% of wildlife watchers report a Ladder-Backed Ethmia Moth in Austin on a given day, against under 5% in August and November–February, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Ladder-Backed Ethmia 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.
Among the best
Of the 3 cities where we can rate Ladder-Backed Ethmia Moth sightings, Austin ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Monterrey (México, about 10%).
GBIF citizen-science records
It is estimated from how often the Ladder-Backed Ethmia Moth is recorded against all the insects logged in Austin (97 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.
