Haritalodes derogata
In 3 days ~10% in a week ~20%
Haritalodes derogata, the cotton leaf roller or okra leaf roller, is a species of moth of the family Crambidae. It was described by Johan Christian Fabricius in 1775. It is widely distributed. Records include the Comoros, the Democratic Republic of the Congo, Ghana, Mali, Réunion, Madagascar, the Seychelles, South Africa, the Gambia, Australia, Fiji, Papua New Guinea, Samoa, the Solomon Islands, the Andaman Islands, Bali, India, Sri Lanka, Malaysia, Myanmar, Singapore, Sri Lanka, Vietnam, China and Japan. It is sometimes encountered in Europe, due to accidental import.
The wingspan is 28–40 mm. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Daintree National Park | 🇦🇺 Australia | |
| 2 | Lamington National Park | 🇦🇺 Australia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Auckland | 🇳🇿 New Zealand | |
| 2 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka | |
| 3 | Chennai | 🇮🇳 India | |
| 4 | Brisbane | 🇦🇺 Australia | |
| 5 | Durban | 🇿🇦 South Africa | |
| 6 | Mumbai | 🇮🇳 India | |
| 7 | Kochi | 🇮🇳 India | |
| 8 | Hong Kong | 🇨🇳 China | |
| 9 | Bengaluru | 🇮🇳 India | |
| 10 | Taipei | 🇹🇼 Taiwan |
Rare
Under 5% of wildlife watchers report a Cotton Leaf Roller sighting in Hong Kong on a given day, based on 10 verified sightings from GBIF citizen-science data. It is the 731st most-seen of the 1125 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
August and October
In those months about 10% of wildlife watchers report a Cotton Leaf Roller in Hong Kong on a given day, against under 5% in September and November–July, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Cotton Leaf Roller sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
8th of 10
Of the 10 cities where we can rate Cotton Leaf Roller sightings, Hong Kong ranks 8th at under 5%. The best odds are in Auckland (New Zealand, about 10%), Colombo [Sri Jayawardenepura Kotte] (Sri Lanka, about 10%) and Chennai (India, about 10%).
Same family: Crambidae
The closest relatives of the Cotton Leaf Roller that you can see in Hong Kong (family Crambidae, Crambid Snout Moths) are Hawaiian Beet Webworm Moth (about 10%), Heortia vitessoides (about 10%) and Camptomastix hisbonalis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cotton Leaf Roller is recorded against all the insects logged in Hong Kong (10 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.
