Euura viminalis
In 3 days ~20% in a week ~50%
Euura viminalis is a species of sawfly belonging to the family Tenthredinidae (common sawflies). The larva feed within galls on the leaves of willows (Salix species). It was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae.
The gall is found on the underside of a leaf of the host plant. It is egg shaped when young, becomes globular as it matures, has brown warts and is usually hairless. It can have a diameter of up to 5 mm and can have a red tinge. On the upperside of the leaf there is a brownish circular depression. The galls can be found on the leaves of osier (Salix viminalis) and purple willow (Salix purpurea).
This species is found in most of south and central Europe north to southern Sweden. It is common in Great Britain and Ireland. Three weevils have been found living in the galls, Melanapion minimum, Archarius crux and A. salicivorus. The larva of the eurytomid wasp, Eurytoma aciculata lives in the gall and kills the sawfly larvae. The tortricid moth, Gypsonoma dealbana usually feeds on various parts of willow but have been found inside the gall, killing the... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Paris | 🇫🇷 France |
With luck
About 10% of wildlife watchers report an Unbisecting Purple Pea-Galler sighting in Sierra Nevada National Park on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 390th most-seen of the 479 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report an Unbisecting Purple Pea-Galler in Sierra Nevada National Park on a given day, against under 5% in August and October–May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Unbisecting Purple Pea-Galler sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Sierra Nevada National Park, in our data
Sierra Nevada National Park is the only park on Wallace's Line with enough records to rate Unbisecting Purple Pea-Galler sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Unbisecting Purple Pea-Galler is recorded against all the insects logged in Sierra Nevada National Park (28 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.
