Lesser Willow Sawfly

Lesser Willow Sawfly

Nematus pavidus

Daily sighting probability <5% · Rare
at Wadden Sea National Park

In 3 days ~10% in a week ~20%

6 Verified sightings at Wadden Sea National Park From 2019 to 2026
6 In 1 park
September Best month
☀️ Diurnal When it's spotted

About the Lesser Willow Sawfly

Nematus pavidus is a Palearctic species of sawfly. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Wadden Sea National Park 🇩🇪 Germany
<5%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Manchester 🇬🇧 United Kingdom
<5%
2 Porto 🇵🇹 Portugal
<5%
3 Birmingham 🇬🇧 United Kingdom
<5%
4 London 🇬🇧 United Kingdom
<5%
5 Saint Petersburg 🇷🇺 Russia
<5%

Before you go

What are the chances of seeing a Lesser Willow Sawfly in Wadden Sea National Park?

Rare

Under 5% of wildlife watchers report a Lesser Willow Sawfly sighting in Wadden Sea National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 630th most-seen of the 818 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.

When is the best time to see a Lesser Willow Sawfly in Wadden Sea National Park?

September

In that month about 10% of wildlife watchers report a Lesser Willow Sawfly in Wadden Sea National Park on a given day, against under 5% in October to August, the lowest months.

What time of day is best to see a Lesser Willow Sawfly?

Between 1 and 4 pm

Across all the parks we cover, that three-hour window holds the most Lesser Willow Sawfly sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Where else can you see a Lesser Willow Sawfly?

Only Wadden Sea National Park, in our data

Wadden Sea National Park is the only park on Wallace's Line with enough records to rate Lesser Willow Sawfly sightings: under 5% of wildlife watchers there report one on a given day.

Which relatives of the Lesser Willow Sawfly live in Wadden Sea National Park?

Same family: Tenthredinidae

The closest relatives of the Lesser Willow Sawfly that you can see in Wadden Sea National Park (family Tenthredinidae, Common Sawflies) are Turnip Sawfly (about 10%) and Alder Sawfly (about 10%), with each one's daily chance of a sighting.

Where does the Lesser Willow Sawfly sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Lesser Willow Sawfly is recorded against all the insects logged in Wadden Sea National Park (6 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.

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