Dythemis nigrescens
In 3 days ~20% in a week ~40%
Dythemis nigrescens, the black setwing, is a species of skimmer in the dragonfly family Libellulidae. It is found in Central America and North America. The IUCN conservation status of Dythemis nigrescens is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2017. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States | |
| 2 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Monterrey | 🇲🇽 México | |
| 3 | San Antonio | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Black Setwing sighting in San Antonio on a given day, based on 78 verified sightings from GBIF citizen-science data. It is the 127th most-seen of the 697 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 to November
In those months about 10% of wildlife watchers report a Black Setwing in San Antonio on a given day, against under 5% in December to March, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Black Setwing sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 cities where we can rate Black Setwing sightings, San Antonio ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Austin (United States, about 10%) and Monterrey (México, about 10%).
GBIF citizen-science records
It is estimated from how often the Black Setwing is recorded against all the insects logged in San Antonio (78 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.
