Onychogomphus uncatus
In 3 days ~20% in a week ~30%
Onychogomphus uncatus, the large pincertail or blue-eyed hook-tailed dragonfly, is a species of dragonflies belonging to the family Gomphidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Mercantour National Park | 🇫🇷 France | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Porto | 🇵🇹 Portugal |
With luck
About 10% of wildlife watchers report a Large Pincertail sighting in Sierra de Guadarrama National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 226th most-seen of the 597 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.
July
In that month about 20% of wildlife watchers report a Large Pincertail in Sierra de Guadarrama National Park on a given day, against under 5% in September to June, the lowest months. That is one of Sierra de Guadarrama National Park's driest months, with about 20 mm of rain against 110 mm in November.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Large Pincertail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 4
Of the 4 parks where we can rate Large Pincertail sightings, Sierra de Guadarrama National Park ranks 4th at about 10%. The best odds are in Cévennes National Park (France, about 20%), Mercantour National Park (France, about 10%) and Pyrénées National Park (France, about 10%).
Same order: Odonata
The closest relatives of the Large Pincertail that you can see in Sierra de Guadarrama National Park (order Odonata, Dragonflies and Damselflies) are Beautiful Demoiselle (about 20%), Common Darter (about 10%) and Golden-Ringed Dragonfly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Large Pincertail is recorded against all the insects logged in Sierra de Guadarrama National Park (17 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.
