Diphlebia nymphoides
In 3 days ~10% in a week ~30%
Diphlebia nymphoides is a species of Australian damselfly in the family Lestoideidae, commonly known as an arrowhead rockmaster. It is endemic to eastern Australia, where it inhabits streams and rivers. Diphlebia nymphoides is a large, solid-looking damselfly; the adult male is a brilliant blue colour with a black and blue striped tail, while the female has a more muted colouring. It sits with its lightly tinted wings spread out.
The genus name Diphlebia is derived from the Greek δίς (dis, "twice" or "double") and φλέψ (phleps, "vein"), likely referring to distinctive wing venation. The species name nymphoides is derived from the Greek νύμφη (nymphē, "bride" or "nymph") and the suffix -ώδης (-ōdēs, "resembling"), alluding to its beauty.
List of Odonata species of Australia Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Springbrook National Park | 🇦🇺 Australia | |
| 3 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report an Arrowhead Rockmaster sighting in Blue Mountains National Park on a given day, based on 23 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 456th most-seen of the 789 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 and November–December
In those months about 10% of wildlife watchers report an Arrowhead Rockmaster in Blue Mountains National Park on a given day, against under 5% in January and March–October, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Arrowhead Rockmaster sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 3
Of the 3 parks where we can rate Arrowhead Rockmaster sightings, Blue Mountains National Park ranks 3rd at about 10%. The best odds are in Lamington National Park (Australia, about 40%) and Springbrook National Park (Australia, about 20%).
GBIF citizen-science records
It is estimated from how often the Arrowhead Rockmaster is recorded against all the insects logged in Blue Mountains National Park (23 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.
