Chironomus crassicaudatus
In 3 days ~10% in a week ~30%
Chironomus crassicaudatus, commonly known as the thick-skinned midge, is a species of midge in the family Chironomidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Thick-Tailed Non-Biting Midge sighting in Shenandoah National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 630th most-seen of the 723 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.
June
In that month about 10% of wildlife watchers report a Thick-Tailed Non-Biting Midge in Shenandoah National Park on a given day, against under 5% in July to May, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Thick-Tailed Non-Biting Midge sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Only Shenandoah National Park, in our data
Shenandoah National Park is the only park on Wallace's Line with enough records to rate Thick-Tailed Non-Biting Midge sightings: under 5% of wildlife watchers there report one on a given day.
Same order: Diptera
The closest relatives of the Thick-Tailed Non-Biting Midge that you can see in Shenandoah National Park (order Diptera, Flies) are Eastern Calligrapher (about 20%), Golden-Backed Snipe Fly (about 20%) and Common Drone Fly (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Thick-Tailed Non-Biting Midge is recorded against all the insects logged in Shenandoah National Park (7 verified sightings from 2019 to 2026), 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.
