Psylla buxi
In 3 days ~20% in a week ~50%
Psylla buxi, known generally as the boxwood psyllid or box sucker, is a species of plant-parasitic hemipteran in the family Psyllidae. It is native to Europe and introduced to North America. The psyllid causes cabbage-like leaf clusters, known as galls at the tips of box shoots. The leaves are slightly thicker and strongly concave, and in the summer conceal many pale green nymphs, which are coated with white wax. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | New York City | 🇺🇸 United States | |
| 2 | Hamburg | 🇩🇪 Germany | |
| 3 | Vancouver | 🇨🇦 Canada | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Boston | 🇺🇸 United States | |
| 6 | San Francisco | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Box Sucker sighting in New York City on a given day, based on 1,403 verified sightings from GBIF citizen-science data. It is the 46th most-seen of the 1623 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
December to February
In those months about 20% of wildlife watchers report a Box Sucker in New York City on a given day, against under 5% in September, the lowest month.
Yes
Of the 6 cities where we can rate Box Sucker sightings, New York City has the highest daily chance: about 10%. Next come Hamburg (Germany, under 5%) and Vancouver (Canada, under 5%).
Same order: Hemiptera
The closest relatives of the Box Sucker that you can see in New York City (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Spotted Lanternfly (about 40%), Large Milkweed Bug (about 20%) and Oleander Aphid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Box Sucker is recorded against all the insects logged in New York City (1,403 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.
