Austroagrion cyane
In 3 days ~10% in a week ~30%
Austroagrion cyane, the south-western billabongfly, is a species of damselfly of the family Coenagrionidae. Despite their common name, they have been found not only in south-western Australia, but also in diverse locations across Australia.
Austroagrion cyane are permanent residents of aquatic habitats. They prefer slow-moving water. Adults grow to around 20-30 mm in length. Females are less common than males and are mostly attracted to ephemeral swamps. The genus name Austroagrion combines the prefix austro- (from Latin auster, meaning "south wind", hence "southern") with Agrion, a genus name derived from Greek ἄγριος (agrios, "wild"). Austroagrion thus refers to a southern representative of that group.
The species name cyane is derived from Greek κυανῆ (kyanē, "dark blue"), referring to its distinctive blue colouring. "Austroagrion cyane (Selys, 1876)". Atlas of Living Australia. Herbert Campion (1915). "A new Agrionine dragonfly from Northern Australia". Annals and Magazine of Natural History. 8th ser. 16 (92): 105–108. doi:10.1080/00222931508693694.
D. F. Waterhouse (1954). "The rate of production... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Perth | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Southwestern Billabongfly sighting in Perth on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 165th most-seen of the 275 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
September and December–January
In those months about 10% of wildlife watchers report a Southwestern Billabongfly in Perth on a given day, against under 5% in February–August and October–November, the lowest months.
Only Perth, in our data
Perth is the only city on Wallace's Line with enough records to rate Southwestern Billabongfly sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Coenagrionidae
The closest relatives of the Southwestern Billabongfly that you can see in Perth (family Coenagrionidae, Narrow-winged Damselflies) are Australian Bluetail (about 10%), Aurora Bluetail (about 10%) and Red And Blue Damsel (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Southwestern Billabongfly is recorded against all the insects logged in Perth (16 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.
