Trichiocercus sparshalli
In 3 days ~10% in a week ~30%
Trichiocercus sparshalli, the long-tailed bombyx or Sparshall's moth, is a moth of the family Notodontidae. It was first described by John Curtis in 1830 and it is found in Australia. The wingspan is about 40 mm. The larvae feed on Eucalyptus cinerea, Eucalyptus leucoxylon, Eucalyptus polyanthemos and Lophostemon confertus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Springbrook National Park | 🇦🇺 Australia | |
| 2 | Kosciuszko National Park | 🇦🇺 Australia | |
| 3 | Great Otway National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Long-Tailed Bombyx sighting in Blue Mountains National Park on a given day, based on 8 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.
April, June and October–November
In those months about 10% of wildlife watchers report a Long-Tailed Bombyx in Blue Mountains National Park on a given day, against under 5% in May, July–September and December–March, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Long-Tailed Bombyx sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 4 parks where we can rate Long-Tailed Bombyx sightings, Blue Mountains National Park ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Springbrook National Park (Australia, about 10%), Kosciuszko National Park (Australia, about 10%) and Great Otway National Park (Australia, about 10%).
Same family: Notodontidae
The closest relatives of the Long-Tailed Bombyx that you can see in Blue Mountains National Park (family Notodontidae, Prominent Moths) are Sorama bicolor (about 10%), Golden Notodontid (about 10%) and Cowled Rough-Head (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Long-Tailed Bombyx is recorded against all the insects logged in Blue Mountains National Park (8 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.
