Trithemis dorsalis
In 3 days ~10% in a week ~30%
Trithemis dorsalis, the highland dropwing, is a species of dragonfly in the family Libellulidae. It is found in Angola, the Democratic Republic of the Congo, Guinea, Kenya, Mozambique, Sierra Leone, South Africa, Tanzania, Uganda, Zambia, Zimbabwe, possibly Burundi, and possibly Malawi. Its natural habitats are subtropical or tropical moist lowland forests, dry savanna, moist savanna, subtropical or tropical dry shrubland, subtropical or tropical moist shrubland, rivers, freshwater marshes, and intermittent freshwater marshes. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Johannesburg | 🇿🇦 South Africa |
Rare
Under 5% of wildlife watchers report a Highland Dropwing sighting in Johannesburg on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 180th most-seen of the 213 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
January–April and October
In those months about 10% of wildlife watchers report a Highland Dropwing in Johannesburg on a given day, against under 5% in May–September and November–December, the lowest months. Those are among Johannesburg's wettest months, with about 75 mm of rain a month against almost none in July.
Only Johannesburg, in our data
Johannesburg is the only city on Wallace's Line with enough records to rate Highland Dropwing sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Trithemis
The closest relatives of the Highland Dropwing that you can see in Johannesburg (genus Trithemis, Dropwings) are Orange-Winged Dropwing (about 10%), Red-Veined Dropwing (about 10%) and Jaunty Dropwing (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Highland Dropwing is recorded against all the insects logged in Johannesburg (11 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.
