Amrasca biguttula
In 3 days ~20% in a week ~40%
Amrasca biguttula, commonly known as the cotton jassid, is a subspecies of leafhopper belonging to the subfamily Typhlocybinae of family Cicadellidae. It is a pest of cotton, okra, and other crops in southern Asia and West Africa.
The adult cotton jassid is a long and slender insect about 2.6 mm (0.1 in) in length. It is yellowish-green, with a conspicuous black spot on either side of the head and another near the tip of the fore wing. The head is pale green and the membranous wings transparent and iridescent. On leaf surfaces, the insect tends to move about diagonally, and when disturbed it immediately jumps and flies away.
Leafhoppers undergo direct development from nymph to adult without undergoing metamorphosis. On okra, eggs are mainly oviposited inside the tissue of leaf blades, but may also be laid in leaf stalks or in soft twigs. The eggs hatch in six or seven days. There are five nymphal instars, developing over a period of about seven days. Nymphs are wingless. Total lifespan is about one month, with females living a little longer than males. The fecundity of females is about fifteen eggs. Adults are attracted to light, females more than... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kaohsiung | 🇹🇼 Taiwan |
With luck
About 10% of wildlife watchers report an Amrasca biguttula sighting in Kaohsiung on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 96th most-seen of the 218 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
December
In that month about 30% of wildlife watchers report an Amrasca biguttula in Kaohsiung on a given day, against under 5% in February–July and October, the lowest months. That is one of Kaohsiung's driest months, with about 35 mm of rain against 440 mm in August.
Only Kaohsiung, in our data
Kaohsiung is the only city on Wallace's Line with enough records to rate Amrasca biguttula sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Amrasca biguttula is recorded against all the insects logged in Kaohsiung (18 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.
