Calliteara horsfieldii
In 3 days ~10% in a week ~20%
Calliteara horsfieldii, or Horsfield's tussock moth, is a moth of the family Erebidae. The species was first described by the British entomologist Edward Saunders in 1851, and named in honor of the British naturalist Thomas Horsfield, who traveled southern Asia and published works on zoology from the region. C. horsfieldii can be found in southern Asia, the islands of the northern Indian Ocean, and many parts of south east Asia and Indonesia. It is also sometimes referred to as the Yellow Tussock Moth.
Calliteara horsfieldii is found the tropical portion of southern and southeast Asian including Sri Lanka, Thailand, Singapore, Malaysia, Sundaland, Sulawesi, Bali and towards New Guinea and Brunei. The males of Calliteara horsfieldii show two colour forms. The first has uniform greyish forewings, while the second form has darker greyish colors towards the antemedial side of the forewings. The antemedial side of the forewings is strongly curved. Females of this species have whitish forewings with faint markings. The hindwings of both sexes are similar to one another and have yellowish tinge. The caterpillar is yellowish with rows of dorsal brushes... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore |
Rare
Under 5% of wildlife watchers report a Horsfield's Tussock Moth sighting in Singapore on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 602nd most-seen of the 1045 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Horsfield's Tussock Moth in Singapore on a given day, so our monthly data shows no clear season.
Only Singapore, in our data
Singapore is the only city on Wallace's Line with enough records to rate Horsfield's Tussock Moth sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Erebidae
The closest relatives of the Horsfield's Tussock Moth that you can see in Singapore (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Hübner's Wasp Moth (about 30%), Triangular-Striped Moth (about 10%) and Erebus ephesperis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Horsfield's Tussock Moth is recorded against all the insects logged in Singapore (16 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.
