Euscirrhopterus cosyra
In 3 days ~30% in a week ~60%
Euscirrhopterus cosyra, the staghorn cholla moth, is a moth in the family Noctuidae (the owlet moths). The species was first described by Herbert Druce in 1896. The MONA or Hodges number for Euscirrhopterus cosyra is 9308. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Staghorn Cholla Moth sighting in Big Bend National Park on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 68th most-seen of the 329 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Staghorn Cholla Moth in Big Bend National Park on a given day, against under 5% in December to March, the lowest months. That is one of Big Bend National Park's wettest months, with about 50 mm of rain against 10 mm in April.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Staghorn Cholla Moth sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 2 parks where we can rate Staghorn Cholla Moth sightings, Big Bend National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Saguaro National Park (United States, about 10%).
Same family: Noctuidae
The closest relatives of the Staghorn Cholla Moth that you can see in Big Bend National Park (family Noctuidae, Cutworm Moths and Allies) are Acontia cuta (about 10%), Pretty Bird-Dropping Moth (about 10%) and Leucocnemis perfundis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Staghorn Cholla Moth is recorded against all the insects logged in Big Bend National Park (28 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.
