Phytoliriomyza melampyga
In 3 days ~10% in a week ~30%
Phytoliriomyza melampyga is a species of fly in the family Agromyzidae. Mesonotum with yellow bands. Scutellum yellow. Frons yellow. The larva mines Himalayan balsam (Impatiens glandulifera). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Helsinki | 🇫🇮 Finland | |
| 4 | Manchester | 🇬🇧 United Kingdom | |
| 5 | Berlin | 🇩🇪 Germany | |
| 6 | Kyiv | 🇺🇦 Ukraine | |
| 7 | Philadelphia | 🇺🇸 United States | |
| 8 | Vancouver | 🇨🇦 Canada | |
| 9 | Portland | 🇺🇸 United States | |
| 10 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Jewelweed Leaf-Miner Fly sighting in Boston on a given day, based on 61 verified sightings from GBIF citizen-science data. It is the 233rd 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 30%, if each day is a fresh chance.
June to August
In those months about 10% of wildlife watchers report a Jewelweed Leaf-Miner Fly in Boston on a given day, against under 5% in September to May, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Jewelweed Leaf-Miner Fly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 15 cities where we can rate Jewelweed Leaf-Miner Fly sightings, Boston ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Liverpool (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Jewelweed Leaf-Miner Fly is recorded against all the insects logged in Boston (61 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.
