Rhopalomyia anthophila
In 3 days ~10% in a week ~20%
Rhopalomyia anthophila the Downy Flower Gall Midge is a species of gall midges, insects in the family Cecidomyiidae. It induces galls on the host Solidago altissima across much of North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chicago | 🇺🇸 United States | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Downy Flower Gall Midge sighting in Chicago on a given day, based on 23 verified sightings from GBIF citizen-science data. It is the 456th most-seen of the 978 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.
September
In that month about 10% of wildlife watchers report a Downy Flower Gall Midge in Chicago on a given day, against under 5% in October to August, the lowest months.
Yes
Of the 2 cities where we can rate Downy Flower Gall Midge sightings, Chicago has the highest daily chance: under 5%. Next come Minneapolis [Saint Paul] (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Downy Flower Gall Midge is recorded against all the insects logged in Chicago (23 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.
