Ampelomyia vitiscoryloides
In 3 days ~10% in a week ~20%
Ampelomyia vitiscoryloides, the grape filbert gall midge, is a species of gall midge in the family Cecidomyiidae. It induces galls on grape plants and is widespread in eastern North America. It was first described by Alpheus Spring Packard in 1869. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Chicago | 🇺🇸 United States | |
| 4 | Montreal | 🇨🇦 Canada | |
| 5 | Washington | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Grape Filbert Gall sighting in Washington on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 1121st most-seen of the 1807 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 a Grape Filbert Gall in Washington on a given day, so our monthly data shows no clear season.
Among the best
Of the 6 cities where we can rate Grape Filbert Gall sightings, Washington ranks 5th at under 5%, level with the leaders once rounded. The best odds are in Minneapolis [Saint Paul] (United States, under 5%), Toronto (Canada, under 5%) and Chicago (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Grape Filbert Gall is recorded against all the insects logged in Washington (16 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.
