Celticecis spiniformis
In 3 days ~10% in a week ~20%
Celticecis spiniformis, the hackberry thorn gall midge, is a species of gall midges in the family Cecidomyiidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dallas | 🇺🇸 United States | |
| 2 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Hackberry Thorn Gall Midge sighting in Houston on a given day, based on 55 verified sightings from GBIF citizen-science data. It is the 538th most-seen of the 1057 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 Hackberry Thorn Gall Midge in Houston on a given day, against under 5% in October to August, the lowest months.
Among the best
Of the 6 cities where we can rate Hackberry Thorn Gall Midge sightings, Houston ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Dallas (United States, under 5%), Minneapolis [Saint Paul] (United States, under 5%) and Austin (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Hackberry Thorn Gall Midge is recorded against all the insects logged in Houston (55 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.
