Eusynthemis tillyardi
In 3 days ~30% in a week ~50%
Eusynthemis tillyardi is a species of dragonfly of the family Synthemistidae, known as the mountain tigertail. It is a medium-sized dragonfly with black and yellow markings. It inhabits coastal and mountain streams in south-eastern Australia
Eusynthemis tillyardi appears similar to Eusynthemis guttata which is found in alpine streams. The genus name Eusynthemis combines the Greek εὖ (eu, "well") with Synthemis, an existing genus of dragonflies, referring to a more developed form compared with other members of Synthemis.
List of Odonata species of Australia Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Blue Mountains National Park | 🇦🇺 Australia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Mountain Tigertail sighting in Blue Mountains National Park on a given day, based on 50 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 93rd most-seen of the 789 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
December and January
In those months about 20% of wildlife watchers report a Mountain Tigertail in Blue Mountains National Park on a given day, against under 5% in February to September, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Mountain Tigertail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Blue Mountains National Park, in our data
Blue Mountains National Park is the only park on Wallace's Line with enough records to rate Mountain Tigertail sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Mountain Tigertail is recorded against all the insects logged in Blue Mountains 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.
