Diplolepis spinosa
In 3 days ~20% in a week ~40%
Diplolepis spinosa, also known as the many-spined twig gall wasp, is a species of cynipid wasp that induces galls on wild roses in North America. D. spinosa-induced galls are said to be "one of the most conspicuous" found in the grasslands of the continent. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Riding Mountain National Park | 🇨🇦 Canada | |
| 2 | Elk Island National Park | 🇨🇦 Canada | |
| 3 | Acadia National Park | 🇺🇸 United States | |
| 4 | Rocky Mountain National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Diplolepis spinosa sighting in Acadia National Park on a given day, based on 20 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 152nd most-seen of the 405 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
January
In that month about 20% of wildlife watchers report a Diplolepis spinosa in Acadia National Park on a given day, against under 5% in February–March and October–December, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Diplolepis spinosa sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 4
Of the 4 parks where we can rate Diplolepis spinosa sightings, Acadia National Park ranks 3rd at about 10%. The best odds are in Riding Mountain National Park (Canada, about 20%) and Elk Island National Park (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Diplolepis spinosa is recorded against all the insects logged in Acadia National Park (20 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.
