Achrosis rondelaria
In 3 days ~10% in a week ~30%
Achrosis rondelaria is a moth of the family Geometridae first described by Johan Christian Fabricius in 1775. It is found in India, Sri Lanka, Myanmar, Java and Nepal. The wingspan of the male is 22 mm. Palpi are slender and do not reach beyond the frons. Antennae bipectinate (comb like on both sides) in both sexes to near apex, and branches longer in the male than in the female. Head, thorax, abdomen and forewings are reddish brown with a greyish suffusion. Forewing produced at apex. Hindwings with the reddish-brown costal half and the inner half crossed by a postmedial line. Underside of wings orange red. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chennai | 🇮🇳 India |
Rare
Under 5% of wildlife watchers report an Achrosis rondelaria sighting in Chennai on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 298th most-seen of the 376 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.
November to January
In those months about 10% of wildlife watchers report an Achrosis rondelaria in Chennai on a given day, against under 5% in February to October, the lowest months.
Only Chennai, in our data
Chennai is the only city on Wallace's Line with enough records to rate Achrosis rondelaria sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Achrosis rondelaria that you can see in Chennai (family Geometridae, Geometer Moths) are Acacia Blood Vein Moth (about 10%), Chiasmia emersaria (about 10%) and Comostola pyrrhogona (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Achrosis rondelaria is recorded against all the insects logged in Chennai (7 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.
