Austrogynacantha heterogena
In 3 days ~10% in a week ~20%
Austrogynacantha is a genus of dragonfly in the family Aeshnidae. Austrogynacantha heterogena, commonly known as the Australian duskhawker, is the only known species of this genus which is found in Australia and New Caledonia.
Austrogynacantha heterogena is a medium-sized dragonfly, darkly coloured with bright green or yellow markings. It is a vagrant, is active at dawn and dusk, and inhabits still waters. The genus name Austrogynacantha combines the prefix austro- (from Latin auster, meaning “south wind”, hence “southern”) with Gynacantha, a genus name derived from Greek γυνή (gynē, “woman”) and ἄκανθα (akantha, “thorn”). The name refers to a southern representative of that group.
The species name heterogena is derived from Greek ἕτερος (heteros, “other”) and γένεσις (genesis, “origin”), referring to its placement in a different genus from Gynacantha. The Australian duskhawker, Austrogynacantha heterogena, should not be confused with almost-similarly named Australasian duskhawker, Anaciaeschna jaspidea, a different species of Aeshnid dragonfly. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brisbane | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report an Australian Duskhawker sighting in Brisbane on a given day, based on 19 verified sightings from GBIF citizen-science data. It is the 504th most-seen of the 1083 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
January to March
In those months about 10% of wildlife watchers report an Australian Duskhawker in Brisbane on a given day, against under 5% in April to December, the lowest months. Those are among Brisbane's wettest months, with about 140 mm of rain a month against 40 mm in July.
Only Brisbane, in our data
Brisbane is the only city on Wallace's Line with enough records to rate Australian Duskhawker sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Aeshnidae
The closest relatives of the Australian Duskhawker that you can see in Brisbane (family Aeshnidae, Darners) are Australian Emperor (about 10%), Blue-Spotted Hawker (about 10%) and Coastal Evening Darner (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Australian Duskhawker is recorded against all the insects logged in Brisbane (19 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.
