Caryomyia thompsoni
In 3 days ~10% in a week ~20%
Caryomyia thompsoni, the hickory placenta gall midge, is a species of gall midge in the family Cecidomyiidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Washington | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Hickory Placenta Gall Midge sighting in Washington on a given day, based on 37 verified sightings from GBIF citizen-science data. It is the 722nd 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 Hickory Placenta Gall Midge in Washington on a given day, so our monthly data shows no clear season.
Yes
Of the 3 cities where we can rate Hickory Placenta Gall Midge sightings, Washington has the highest daily chance: under 5%. Next come Boston (United States, under 5%) and New York City (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Hickory Placenta Gall Midge is recorded against all the insects logged in Washington (37 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.
