Micrathyria atra
In 3 days ~20% in a week ~30%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 2 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 3 | Arenal Volcano National Park | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report a Black Dasher sighting in Arenal Volcano National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 178th most-seen of the 302 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April
In that month about 20% of wildlife watchers report a Black Dasher in Arenal Volcano National Park on a given day, against under 5% in June–August and October–February, the lowest months. That is one of Arenal Volcano National Park's driest months, with about 140 mm of rain against 500 mm in November.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Black Dasher 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 3 parks where we can rate Black Dasher sightings, Arenal Volcano National Park ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Braulio Carrillo National Park (Costa Rica, about 10%) and Tenorio Volcano National Park (Costa Rica, about 10%).
Same genus: Micrathyria
The closest relatives of the Black Dasher that you can see in Arenal Volcano National Park (genus Micrathyria, Speckled Dashers) are Forest Pond Dasher (about 10%), Square-Spotted Dasher (about 10%) and Three-Striped Dasher (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black Dasher is recorded against all the insects logged in Arenal Volcano National Park (8 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.
