Psylla buxi
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Box Sucker sighting in Hamburg on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 326th most-seen of the 423 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.
May to July
In those months about 10% of wildlife watchers report a Box Sucker in Hamburg on a given day, against under 5% in August to April, the lowest months.
2nd of 6
Of the 6 cities where we can rate Box Sucker sightings, Hamburg ranks 2nd at under 5%. The best odds are in New York City (United States, about 10%).
Same order: Hemiptera
The closest relatives of the Box Sucker that you can see in Hamburg (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Brown Marmorated Stink Bug (about 30%), European Firebug (about 30%) and Forest Bug (about 30%), 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 Hamburg (6 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.
