Austroaeschna sigma
In 3 days ~50% in a week ~80%
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 |
Possible
About 20% of wildlife watchers report a Sigma Darner sighting in Lamington National Park on a given day, based on 50 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 33rd most-seen of the 430 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
December
In that month about 40% of wildlife watchers report a Sigma Darner in Lamington National Park on a given day, against under 5% in July to September, the lowest months. That is one of Lamington National Park's wettest months, with about 140 mm of rain against 40 mm in August.
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.
Yes
Of the 2 parks where we can rate Sigma Darner sightings, Lamington National Park has the highest daily chance: about 20%. Next come Springbrook National Park (Australia, about 10%).
Same genus: Austroaeschna
The closest relatives of the Sigma Darner that you can see in Lamington National Park (genus Austroaeschna) are Forest Darner (about 30%), Unicorn Darner (about 30%) and Inland 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 Lamington National Park (50 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.
