Oraesia emarginata
In 3 days ~10% in a week ~30%
Oraesia emarginata is a species of moth of the family Erebidae first described by Johan Christian Fabricius in 1794. It is found in Australia, New Caledonia, Indonesia, New Guinea, Pakistan, the Philippines, India, Sri Lanka, Sulawesi, Taiwan, China, Japan, Korea and Nepal as well as Eritrea, Ethiopia, Kenya, Namibia, Nigeria, South Africa, Tanzania, the Gambia, Uganda, Oman and Yemen.
The wingspan is about 35–42 mm. Antennae of male unipectinate. Palpi with the third joint produced to a point. Forewings with outer margin angled at vein 4. Male has fiery orange head and collar. Thorax reddish brown. Abdomen fuscous. Forewings reddish brown suffused with purple. Numerous indistinct slightly waved oblique lines present. A dark streak found on median nervure. An oblique double line runs from apex to inner margin beyond middle, filled in with pale near apex. The area beyond it suffused with gold colour. Hindwings ochreous white, suffused with fuscous towards outer margin.
Female has much more variegated forewings. A diffused chocolate patch found below middle of cell. A white streak can be seen on vein 2. Abdomen and hindwings fuscous. Larva dark violet brown with a sub... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Oraesia emarginata sighting in Chennai on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 284th 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.
August to November
In those months about 10% of wildlife watchers report an Oraesia emarginata in Chennai on a given day, against under 5% in December to July, the lowest months. Those are among Chennai's wettest months, with about 210 mm of rain a month against 5 mm in February.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Oraesia emarginata sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
4th of 5
Of the 5 cities where we can rate Oraesia emarginata sightings, Chennai ranks 4th at under 5%. The best odds are in Nagoya (Japan, about 10%), Osaka (Japan, about 10%) and Tokyo (Japan, about 10%).
Same family: Erebidae
The closest relatives of the Oraesia emarginata that you can see in Chennai (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Sandalwood Defoliator (about 30%), Dot-Underwing Moth (about 20%) and Common Fruit-Piercing Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Oraesia emarginata 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.
