Dichromodes atrosignata
In 3 days ~20% in a week ~40%
Dichromodes atrosignata is a species moth of the family Geometridae first described by Francis Walker in 1861. It is found in northern Australia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Otway National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Black-Signed Heath Moth sighting in Blue Mountains National Park on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 181st 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 40%, if each day is a fresh chance.
September
In that month about 20% of wildlife watchers report a Black-Signed Heath Moth in Blue Mountains National Park on a given day, against under 5% in March to August, the lowest months. That is one of Blue Mountains National Park's driest months, with about 50 mm of rain against 150 mm in March.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Black-Signed Heath Moth sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 2 parks where we can rate Black-Signed Heath Moth sightings, Blue Mountains National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Great Otway National Park (Australia, about 10%).
Same genus: Dichromodes
The closest relatives of the Black-Signed Heath Moth that you can see in Blue Mountains National Park (genus Dichromodes) are Pale Grey Heath Moth (about 10%) and Dichromodes molybdaria (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black-Signed Heath Moth is recorded against all the insects logged in Blue Mountains National Park (34 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.
