Spesbona angusta
In 3 days ~20% in a week ~40%
Spesbona is a monotypic genus of damselflies in the family Platycnemididae containing only the species Spesbona angusta, commonly known as the spesbona, Ceres featherlegs, Ceres stream-damsel, or Ceres streamjack. It is an endangered species endemic to the Western Cape Province of South Africa.
This species was first described as Metacnemis angusta by Edmond de Sélys Longchamps in 1863 based on a female type specimen that is now thought to be lost. A second specimen, also female, was collected in 1920 near Ceres, but the species would not be seen again until 2003, when a population was discovered in the Dutoitsrivier valley. A description of the male and redescription of the female from the newly discovered population was published in 2006. In 2013, Klaas-Douwe Dijkstra erected the new genus Spesbona for this species, combining it as Spesbona angusta and placing it in the tribe Coperini within the subfamily Platycnemidinae. It is the only species in the genus.
Spesbona angusta is restricted to the south west Western Cape Province at around 400 m (1,300 ft) above sea level. Though initially known from Ceres, it has not been recorded... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Garden Route National Park | 🇿🇦 South Africa |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Ceres Streamjack sighting in Garden Route National Park on a given day, based on 39 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 109th most-seen of the 298 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.
October
In that month about 20% of wildlife watchers report a Ceres Streamjack in Garden Route National Park on a given day, against under 5% in December to July, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Ceres Streamjack sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Garden Route National Park, in our data
Garden Route National Park is the only park on Wallace's Line with enough records to rate Ceres Streamjack sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Platycnemididae
The closest relatives of the Ceres Streamjack that you can see in Garden Route National Park (family Platycnemididae, White-legged damselflies) are Goldtail (about 20%) and Sooty Threadtail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Ceres Streamjack is recorded against all the insects logged in Garden Route National Park (39 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.
