Pachypsylla celtidisvesicula
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Hackberry Blister Gall Psyllid sighting in Dallas on a given day, based on 27 verified sightings from GBIF citizen-science data. It is the 556th most-seen of the 1412 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.
August
In that month about 10% of wildlife watchers report a Hackberry Blister Gall Psyllid in Dallas on a given day, against under 5% in September to July, the lowest months.
2nd of 8
Of the 8 cities where we can rate Hackberry Blister Gall Psyllid sightings, Dallas ranks 2nd at under 5%. The best odds are in Minneapolis [Saint Paul] (United States, about 10%).
Same genus: Pachypsylla
The closest relatives of the Hackberry Blister Gall Psyllid that you can see in Dallas (genus Pachypsylla, Hackberry Gall Psyllids) are Hackberry Petiole Gall Psyllid (about 10%) and Hackberry Nipplegall Psyllid (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hackberry Blister Gall Psyllid is recorded against all the insects logged in Dallas (27 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.
