Tramea eurybia
In 3 days ~10% in a week ~20%
Tramea eurybia, commonly known as the dune glider, is a species of dragonfly in the family Libellulidae. It occurs from Southeast Asia through New Guinea to Fiji, and in Australia is found mainly at coastal dune lakes in eastern Australia.
It is a medium-sized dragonfly with red, brown and black markings and a distinctive dark patch at the base of the hindwing. In 1878, Selys described Tramea eurybia from specimens collected in Sulawesi. In 1967, Watson reviewed Indo-Australian species of the Tramea eurybia group, examining the relationships between Tramea eurybia and related species including Tramea stenoloba. Watson recognised Tramea eurybia as a widespread species occurring from the Andaman Islands through the Indonesian archipelago and New Guinea to Australia and Fiji.
Tramea eurybia is a medium-sized dragonfly with red, brown and black markings and a distinctive dark patch at the base of the hindwing. It is similar in appearance to Tramea stenoloba, but differs in the structure of the reproductive appendages of the male and the vulvar scale, a structure beneath the abdomen of the female.
The thorax is reddish-brown to red, with limited... 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 Dune Glider sighting in Brisbane on a given day, based on 26 verified sightings from GBIF citizen-science data. It is the 474th 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.
April
In that month about 10% of wildlife watchers report a Dune Glider in Brisbane on a given day, against under 5% in May to March, the lowest months.
Only Brisbane, in our data
Brisbane is the only city on Wallace's Line with enough records to rate Dune Glider sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Dune Glider is recorded against all the insects logged in Brisbane (26 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.
