Gynacantha nourlangie
In 3 days ~30% in a week ~50%
Gynacantha nourlangie is a species of dragonfly in the family Aeshnidae, known as the cave duskhawker. It inhabits pools in caves in northern Australia. Gynacantha nourlangie is a large, sandy brown dragonfly with a constricted waist in its abdomen at segment 3. It is a crepuscular insect and flies at dawn and dusk.
It is widely distributed across northern Australia, from the Kimberley in Western Australia, through the north of Northern Territory and Cape York in Queensland. The genus name Gynacantha is derived from Greek γυνή (gynē, “woman”) and ἄκανθα (akantha, “thorn”). The name refers to the spines at the end of the female abdomen.
The species name nourlangie refers to Nourlangie Creek in western Arnhem Land, Northern Territory, where the species was first recorded. List of Odonata species of Australia Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kakadu National Park | 🇦🇺 Australia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Cave Duskhawker sighting in Kakadu National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 62nd most-seen of the 76 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
September and November
In those months about 20% of wildlife watchers report a Cave Duskhawker in Kakadu National Park on a given day, against under 5% in June, October and December–April, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Cave Duskhawker sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Kakadu National Park, in our data
Kakadu National Park is the only park on Wallace's Line with enough records to rate Cave Duskhawker sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Cave Duskhawker is recorded against all the insects logged in Kakadu National Park (5 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.
