Silhouette: PhyloPic
Mastor nysa
In 3 days ~20% in a week ~40%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Antonio | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Mastor nysa sighting in Big Bend National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 131st most-seen of the 329 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.
April–May and July–October
In those months about 10% of wildlife watchers report a Mastor nysa in Big Bend National Park on a given day, against under 5% in June and November–March, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Mastor nysa sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Big Bend National Park, in our data
Big Bend National Park is the only park on Wallace's Line with enough records to rate Mastor nysa sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Mastor nysa is recorded against all the insects logged in Big Bend National Park (13 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.
