Cusiala raptaria
In 3 days ~10% in a week ~30%
Cusiala raptaria is a moth of the family Geometridae first described by Francis Walker in 1860. It is found in the Indian subregion and Sri Lanka. The caterpillar is a pest of several crops such as Albizia procera, Carissa spinarum, Cassia fistula, Dalbergia sissoo, Eugenia cumini, Lannea coromandelica, Mallotus philippensis, Schleichera oleosa, Shorea robusta, Syzygium cumini and Xylia xylocarpa. 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 a Cusiala raptaria sighting in Chennai on a given day, based on 8 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 and November–January
In those months about 10% of wildlife watchers report a Cusiala raptaria in Chennai on a given day, against under 5% in February–July and September–October, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Cusiala raptaria sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Only Chennai, in our data
Chennai is the only city on Wallace's Line with enough records to rate Cusiala raptaria sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Geometridae
The closest relatives of the Cusiala raptaria 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 Cusiala raptaria is recorded against all the insects logged in Chennai (8 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.
