Sympetrum fonscolombii
In 3 days ~20% in a week ~40%
The red-veined darter or nomad (Sympetrum fonscolombii) is a dragonfly in the genus Sympetrum. There is genetic and behavioural evidence that S. fonscolombii is not closely related to the other members of the genus Sympetrum and it will at some time in the future be removed from this genus.
Sympetrum fonscolombii was named under the protonym Libellula fonscolombii by the Belgian entomologist Edmond de Sélys Longchamps in 1840, in honour of the French entomologist Étienne de Fonscolombe, whence the species name. Its name is sometimes cited as fonscolombei instead of fonscolombii, but Askew (2004) gives the latter as the correct spelling.
Sympetrum fonscolombii is a widespread and common species in much of central and southern Europe including most Mediterranean islands, North Africa, the Middle East, Mongolia, south-western Asia, including the Indian subcontinent, the Indian Ocean Islands and Sri Lanka. In Europe it is resident in the south of its range but in some years it migrates northward. From the 1990s onwards, it has increasingly been found in northwest Europe, including Belgium, Sweden, Finland, Poland, Great Britain, and Ireland... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Doñana National Park | 🇪🇸 Spain | |
| 2 | Camargue | 🇫🇷 France | |
| 3 | Mercantour National Park | 🇫🇷 France | |
| 4 | De Hoop Nature Reserve | 🇿🇦 South Africa | |
| 5 | Garden Route National Park | 🇿🇦 South Africa | |
| 6 | Table Mountain National Park | 🇿🇦 South Africa | |
| 7 | Monfragüe National Park | 🇪🇸 Spain | |
| 8 | Cévennes National Park | 🇫🇷 France | |
| 9 | Addo Elephant National Park | 🇿🇦 South Africa | |
| 10 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 11 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 12 | Pyrénées National Park | 🇫🇷 France | |
| 13 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 14 | Wadden Sea National Park | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Nomad sighting in Porto on a given day, based on 44 verified sightings from GBIF citizen-science data. It is the 144th most-seen of the 498 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.
May to October
In those months about 10% of wildlife watchers report a Nomad in Porto on a given day, against under 5% in November to April, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Nomad sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
20th of 31
Of the 31 cities where we can rate Nomad sightings, Porto ranks 20th at about 10%. The best odds are in Antalya (Turkey, about 30%), Valencia (Spain, about 30%) and Izmir (Turkey, about 30%).
GBIF citizen-science records
It is estimated from how often the Nomad is recorded against all the insects logged in Porto (44 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.
