Graphocephala atropunctata
In 3 days ~10% in a week ~20%
Graphocephala atropunctata, commonly known as the blue-green sharpshooter, is a hemipteran bug native to the United States west coast, as well as Arizona and New Mexico. It carries the phytopathogenic bacteria Xylella fastidiosa which infects the xylem of grape vines causing die-back – known as Pierce's disease. This leads to loss of productivity and economic damage to the California vineyards. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Channel Islands National Park | 🇺🇸 United States | |
| 2 | Grand Canyon National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Seattle | 🇺🇸 United States | |
| 2 | Vancouver | 🇨🇦 Canada | |
| 3 | Portland | 🇺🇸 United States | |
| 4 | San Francisco | 🇺🇸 United States | |
| 5 | Los Angeles | 🇺🇸 United States | |
| 6 | San Diego | 🇺🇸 United States | |
| 7 | Mexico City | 🇲🇽 México |
Rare
Under 5% of wildlife watchers report a Blue-Green Sharpshooter sighting in Los Angeles on a given day, based on 153 verified sightings from GBIF citizen-science data. It is the 131st most-seen of the 851 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.
May and July
In those months about 10% of wildlife watchers report a Blue-Green Sharpshooter in Los Angeles on a given day, against under 5% in June and August–April, the lowest months. Those are among Los Angeles's driest months, with about 5 mm of rain a month against 75 mm in February.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Blue-Green Sharpshooter sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 7
Of the 7 cities where we can rate Blue-Green Sharpshooter sightings, Los Angeles ranks 5th at under 5%. The best odds are in Seattle (United States, about 10%), Vancouver (Canada, about 10%) and Portland (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Blue-Green Sharpshooter is recorded against all the insects logged in Los Angeles (153 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.
