Scirpophaga incertulas
In 3 days ~10% in a week ~30%
Scirpophaga incertulas, the yellow stem borer or rice yellow stem borer, is a species of moth of the family Crambidae. It was described by Francis Walker in 1863. It is found in Afghanistan, Nepal, north-eastern India, Sri Lanka, Bangladesh, Myanmar, Vietnam, Thailand, Malaysia, Singapore, Sumatra, Java, Borneo, Sumba, Sulawesi, the Philippines, Taiwan, China and Japan.
The wingspan of the male is 18–22 mm and the female is 34 mm. Adult males are smaller than the females. Males are brownish ochreous. Forewings irrorated (sprinkled) with dark scales and with the veins slightly streaked with fuscous. A black spot found at lower angle of cell. There is an oblique fuscous line runs from apex to vein 2. A marginal black specks series can be seen. Hindwings ochreous white. Female fuscous brown with pale fuscous hindwings.
The larvae feed on Oryza sativa. It is considered as a major rice pest throughout India, Sri Lanka as well as in various parts of Nepal, and it devastates harvests annually. They bore the stem of their host plant. After hatching, early instars bore into the leaf sheath and causing longitudinal yellowish-white patches as a result... 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 a Rice Yellow Stem Borer sighting in Kochi on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 277th most-seen of the 428 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.
February–May and September–December
In those months about 10% of wildlife watchers report a Rice Yellow Stem Borer in Kochi on a given day, against under 5% in January and June–August, the lowest months.
4th of 4
Of the 4 cities where we can rate Rice Yellow Stem Borer sightings, Kochi ranks 4th at under 5%. The best odds are in Kolkata (India, about 10%), Hyderabad (India, about 10%) and Chennai (India, about 10%).
Same family: Crambidae
The closest relatives of the Rice Yellow Stem Borer that you can see in Kochi (family Crambidae, Crambid Snout Moths) are Hawaiian Beet Webworm Moth (about 20%), Hydrilla Leafcutter Moth (about 10%) and Rice Case Bearer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rice Yellow Stem Borer is recorded against all the insects logged in Kochi (11 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.
