Pachypsylla celtidisvesicula
In 3 days ~20% in a week ~30%
Pachypsylla celtidisvesicula, commonly called the hackberry blistergall psyllid, is a species of aphalarid psyllid found in North America. The nymphs of this species induce blister-like galls on the leaves of various hackberries (Celtis spp.) throughout its range.
It closely related to the more common hackberry nipplegall psyllid (Pachypsylla celtidismamma), which it strongly resembles as an adult. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Dallas | 🇺🇸 United States | |
| 3 | Austin | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States | |
| 5 | Montreal | 🇨🇦 Canada | |
| 6 | Chicago | 🇺🇸 United States | |
| 7 | Boston | 🇺🇸 United States | |
| 8 | New York City | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Hackberry Blister Gall Psyllid sighting in Minneapolis [Saint Paul] on a given day, based on 53 verified sightings from GBIF citizen-science data. It is the 165th most-seen of the 672 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 October
In those months about 10% of wildlife watchers report a Hackberry Blister Gall Psyllid in Minneapolis [Saint Paul] on a given day, against under 5% in November to May, the lowest months. Those are among Minneapolis [Saint Paul]'s wettest months, with about 100 mm of rain a month against 20 mm in January.
Yes
Of the 8 cities where we can rate Hackberry Blister Gall Psyllid sightings, Minneapolis [Saint Paul] has the highest daily chance: about 10%. Next come Dallas (United States, under 5%) and Austin (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Hackberry Blister Gall Psyllid is recorded against all the insects logged in Minneapolis [Saint Paul] (53 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.
