Austroaeschna sigma
In 3 days ~20% in a week ~50%
Austroaeschna sigma is a species of large dragonfly in the family Aeshnidae, known as the sigma darner. It inhabits the upper reaches of small mountain streams in New South Wales and south-eastern Queensland, Australia. Austroaeschna sigma is a very dark dragonfly with pale markings. It appears similar to the multi-spotted darner, Austroaeschna multipunctata, which inhabits mountain streams in southern New South Wales and Victoria.
The genus name Austroaeschna combines the prefix austro- (from Latin auster, meaning “south wind”, hence “southern”) with Aeshna, a genus of dragonflies. The species name sigma refers to the Greek letter sigma, corresponding to the English letter "S", and to the shape of a mark on the thorax.
List of dragonflies of Australia Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Springbrook National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Sigma Darner sighting in Springbrook National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 180th most-seen of the 429 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.
April–May, October and December–February
In those months about 10% of wildlife watchers report a Sigma Darner in Springbrook National Park on a given day, against under 5% in March, June–September and November, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Sigma Darner sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Sigma Darner sightings, Springbrook National Park ranks 2nd at about 10%. The best odds are in Lamington National Park (Australia, about 20%).
Same genus: Austroaeschna
The closest relatives of the Sigma Darner that you can see in Springbrook National Park (genus Austroaeschna) are Forest Darner (about 10%) and Unicorn Darner (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sigma Darner is recorded against all the insects logged in Springbrook National Park (11 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.
