Aciagrion fragile
In 3 days ~10% in a week ~30%
Aciagrion fragile is a species of damselfly in the family Coenagrionidae, commonly known as a blue slim. It is a small, slender damselfly, the male is blue and black. It has been recorded from northern Australia, New Guinea and the Lesser Sunda Islands in Indonesia,
where it inhabits still waters and swamps. The genus name Aciagrion is made from two greek words: aci or ἀκίς meaning a pointed object or needle, and agrion or ἄγριος, meaning wild. Agrion was the name given in 1775 by Johan Fabricius for all damselflies.
The species name fragile is a Latin word meaning fragile, or easily broken. In 1906, Robin Tillyard named this species probably in contrast to other members of the genus Ischnura, where it had been provisionally placed. While the name was originally spelled "fragilis", the ICZN mandates that species names that are adjectival must agree in gender with the genus name, so when this species was moved to the genus Aciagrion, which is neuter in grammatical gender, the spelling of the species name changed to fragile.
List of Odonata species of Australia 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 a Blue Slim sighting in Brisbane on a given day, based on 69 verified sightings from GBIF citizen-science data. It is the 352nd 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 30%, if each day is a fresh chance.
February, May and October
In those months about 10% of wildlife watchers report a Blue Slim in Brisbane on a given day, against under 5% in March–April, June–September and November–January, the lowest months.
Only Brisbane, in our data
Brisbane is the only city on Wallace's Line with enough records to rate Blue Slim sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Coenagrionidae
The closest relatives of the Blue Slim that you can see in Brisbane (family Coenagrionidae, Narrow-winged Damselflies) are Australian Bluetail (about 20%), Aurora Bluetail (about 10%) and Redtail (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blue Slim is recorded against all the insects logged in Brisbane (69 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.
