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 Minneapolis [Saint Paul] on a given day, based on 24 verified sightings from GBIF citizen-science data. It is the 268th most-seen of the 672 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.
May and June
In those months about 10% of wildlife watchers report a Box Elder Gall Midge in Minneapolis [Saint Paul] on a given day, against under 5% in July to April, the lowest months. Those are among Minneapolis [Saint Paul]'s wettest months, with about 120 mm of rain a month against 20 mm in January.
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, Minneapolis [Saint Paul] ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Detroit (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 Minneapolis [Saint Paul] (24 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.
