Orthetrum trinacria
In 3 days ~20% in a week ~50%
Orthetrum trinacria, the Long Skimmer, is a species of dragonfly in the family Libellulidae. It is found in Algeria, Angola, Botswana, Burkina Faso, Cameroon, Ivory Coast, Egypt, Ethiopia, France (Corsica), Gambia, Ghana, Italy (Sicily and Sardinia), Kenya, Libya, Madagascar, Malawi, Mali, Morocco, Mozambique, Namibia, Niger, Nigeria, Senegal, Somalia, South Africa, Tanzania, Togo, Uganda, Zambia, Zimbabwe, and possibly Burundi. It was recently recorded in the Maltese Islands in 2003 and was recorded breeding on the island of Gozo in 2004. Its natural habitats are rivers, shrub-dominated wetlands, swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, and intermittent freshwater marshes. Also breeding in Southern Spain (Murcia and Malaga Provinces) and the Canary Islands. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | uMkhuze Game Reserve | 🇿🇦 South Africa | |
| 2 | iSimangaliso Wetland Park | 🇿🇦 South Africa | |
| 3 | Monfragüe National Park | 🇪🇸 Spain | |
| 4 | Pilanesberg National Park | 🇿🇦 South Africa | |
| 5 | West Coast National Park | 🇿🇦 South Africa | |
| 6 | Kruger National Park | 🇿🇦 South Africa | |
| 7 | Garden Route National Park | 🇿🇦 South Africa | |
| 8 | Table Mountain National Park | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report a Long Skimmer sighting in Algiers on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 115th most-seen of the 133 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
June and September–October
In those months about 20% of wildlife watchers report a Long Skimmer in Algiers on a given day, against under 5% in July–August and November–May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Long Skimmer sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 cities where we can rate Long Skimmer sightings, Algiers has the highest daily chance: about 10%. Next come Cape Town (South Africa, about 10%) and Durban (South Africa, under 5%).
Same genus: Orthetrum
The closest relatives of the Long Skimmer that you can see in Algiers (genus Orthetrum) are Epaulet Skimmer (about 20%) and Keeled Skimmer (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Long Skimmer is recorded against all the insects logged in Algiers (7 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.
