Diplolepis bicolor
In 3 days ~10% in a week ~20%
Diplolepis bicolor, also known as the spiny bud gall wasp, is a species of cynipid wasp that induces bud galls on wild roses. This gall wasp is found throughout North America. The galls measure 10 to 12 mm in diameter and have a superficial resemblance to the leaf galls induced by Diplolepis polita. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Spiny Rose Gall Wasp sighting in Portland on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 466th most-seen of the 507 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Spiny Rose Gall Wasp in Portland on a given day, so our monthly data shows no clear season.
Only Portland, in our data
Portland is the only city on Wallace's Line with enough records to rate Spiny Rose Gall Wasp sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Spiny Rose Gall Wasp is recorded against all the insects logged in Portland (7 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.
