Pseudalmenus chlorinda
In 3 days ~20% in a week ~30%
The silky hairstreak or chlorinda hairstreak (Pseudalmenus chlorinda) is a butterfly belonging to the family Lycaenidae. The species was first described by Emile Blanchard in 1848. It occurs in Australia. It is the only species in the monotypic genus Pseudalmenus, described by Hamilton Herbert Druce in 1902.
The male and female are similar, with the wings of the female slightly more rounded. The wings are black or brown on top with yellow-orange patches. The lower wings have orange patches and black tails with white edges. The underside of the wings is yellow grey with black and orange markings. The eggs are pale green with a diameter about... 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 Silky Hairstreak sighting in Blue Mountains National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 359th most-seen of the 789 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
September to November
In those months about 10% of wildlife watchers report a Silky Hairstreak in Blue Mountains National Park on a given day, against under 5% in December to August, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Silky Hairstreak 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 Silky Hairstreak sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Lycaenidae
The closest relatives of the Silky Hairstreak that you can see in Blue Mountains National Park (family Lycaenidae, Gossamer-winged Butterflies) are Lesser Grass Blue (about 20%), Zizina labradus (about 10%) and Common Imperial Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Silky Hairstreak is recorded against all the insects logged in Blue Mountains National Park (12 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.
