Parapoynx stagnalis
In 3 days ~30% in a week ~50%
Parapoynx stagnalis, the rice case bearer or rice caseworm, is a species of moth in the family Crambidae. It has a wide distribution and is found in India, Sri Lanka, South-East Asia, South Africa, South America, southern Europe (Spain and Greece), Russia and Australia (the Northern Territory and Queensland).
The life cycle is completed in about 35–40 days. The length of the forewings is 15 mm. Adult has whitish wings with pale brown wavy markings. There are two black comma-shaped marks on each forewing. Male can be identified by narrow and uniform abdomen, whereas female abdomen is widest at the middle but tapering posteriorly. Female usually lay 150 eggs and first instar larvae emerge after a week. Final larva emerge after 20 days, and reaches its maximum length of 10-12mm. The moth has six larval instars. Due to branched tubular gills, caterpillars can respire in aquatic media. Therefore, instar can disperse through water. Pupation occurs when the pupal case is attached to the leaf sheath above the water level. After a week of pupation, adult emerges.
As its common name implies, rice caseworm is one of the major pests of rice throughout the world.... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 2 | Daintree National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Rice Case Bearer sighting in Kochi on a given day, based on 46 verified sightings from GBIF citizen-science data. It is the 111th most-seen of the 428 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Rice Case Bearer in Kochi on a given day, against under 5% in September, the lowest month. That is one of Kochi's wettest months, with about 440 mm of rain against 15 mm in January.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Rice Case Bearer sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 8 cities where we can rate Rice Case Bearer sightings, Kochi has the highest daily chance: about 10%. Next come Colombo [Sri Jayawardenepura Kotte] (Sri Lanka, about 10%) and Pune (India, about 10%).
GBIF citizen-science records
It is estimated from how often the Rice Case Bearer is recorded against all the insects logged in Kochi (46 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.
