Phytomyza ilicicola
In 3 days ~10% in a week ~20%
Phytomyza ilicicola, the native holly leafminer, is a species of leaf miner fly in the family Agromyzidae. They are a pest of the American holly. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States | |
| 2 | New York City | 🇺🇸 United States | |
| 3 | Philadelphia | 🇺🇸 United States | |
| 4 | Baltimore | 🇺🇸 United States | |
| 5 | Boston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an American Holly Leafminer sighting in Boston on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 967th most-seen of the 1200 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an American Holly Leafminer in Boston on a given day, so our monthly data shows no clear season.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most American Holly Leafminer sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 5
Of the 5 cities where we can rate American Holly Leafminer sightings, Boston ranks 5th at under 5%. The best odds are in Washington (United States, about 10%), New York City (United States, under 5%) and Philadelphia (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the American Holly Leafminer is recorded against all the insects logged in Boston (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.
