Acericecis ocellaris
In 3 days ~10% in a week ~30%
Acericecis ocellaris, known generally as ocellate gall midge, is a species of gall midge in the family Cecidomyiidae. Other common names include the maple eyespot gall and maple leaf spot gall. This species induces blister-like galls on the leaves of maples in the Nearctic, including Acer circinatum, A. pensylvanicum, A. rubrum, A. saccharinum, A. saccharum, and A. spicatum.
The species was first described by Carl Robert Osten-Sacken in 1862 as Cecidomyia ocellaris. It is the type species of the genus. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Gros Morne National Park | 🇨🇦 Canada | |
| 3 | Acadia National Park | 🇺🇸 United States | |
| 4 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Philadelphia | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States | |
| 5 | Minneapolis [Saint Paul] | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Ocellate Gall Midge sighting in Washington on a given day, based on 83 verified sightings from GBIF citizen-science data. It is the 335th 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 30%, if each day is a fresh chance.
April and May
In those months about 10% of wildlife watchers report an Ocellate Gall Midge in Washington on a given day, against under 5% in June to March, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Ocellate Gall Midge sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 5 cities where we can rate Ocellate Gall Midge sightings, Washington has the highest daily chance: under 5%. Next come Boston (United States, under 5%) and Philadelphia (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Ocellate Gall Midge is recorded against all the insects logged in Washington (83 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.
