Contarinia negundinis
In 3 days ~10% in a week ~20%
Contarinia negundinis, known generally as boxelder gall midge, is a species of gall midges in the family Cecidomyiidae. Other common names include the boxelder bud gall midge and boxelder leaf gall midge. It is the only North American species that enters diapause during the pupal stage of development. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Detroit | 🇺🇸 United States | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | Dallas | 🇺🇸 United States | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | Toronto | 🇨🇦 Canada | |
| 7 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Box Elder Gall Midge sighting in Chicago on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 706th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Box Elder Gall Midge in Chicago on a given day, so our monthly data shows no clear season.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Box Elder Gall Midge sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Among the best
Of the 7 cities where we can rate Box Elder Gall Midge sightings, Chicago ranks 5th at under 5%, level with the leaders once rounded. The best odds are in Detroit (United States, under 5%), Minneapolis [Saint Paul] (United States, under 5%) and Washington (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Box Elder Gall Midge is recorded against all the insects logged in Chicago (8 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.
