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 Saguaro National Park on a given day, based on 97 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 35th most-seen of the 354 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.
August
In that month about 40% of wildlife watchers report a Staghorn Cholla Moth in Saguaro National Park on a given day, against under 5% in November to May, the lowest months. That is one of Saguaro National Park's wettest months, with about 45 mm of rain against almost none in May.
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.
Yes
Of the 2 parks where we can rate Staghorn Cholla Moth sightings, Saguaro National Park has the highest daily chance: about 10%. Next come Big Bend National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Staghorn Cholla Moth is recorded against all the insects logged in Saguaro National Park (97 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.
