Graminella nigrifrons
In 3 days ~20% in a week ~30%
Graminella nigrifrons, the black-faced leafhopper, is a species of leafhopper in the family Cicadellidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | Dallas | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Houston | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Black-Faced Leafhopper sighting in Great Smoky Mountains National Park on a given day, based on 26 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 334th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June to December
In those months about 10% of wildlife watchers report a Black-Faced Leafhopper in Great Smoky Mountains National Park on a given day, against under 5% in January to May, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Black-Faced Leafhopper sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Great Smoky Mountains National Park, in our data
Great Smoky Mountains National Park is the only park on Wallace's Line with enough records to rate Black-Faced Leafhopper sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Black-Faced Leafhopper is recorded against all the insects logged in Great Smoky Mountains National Park (26 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.
