Bramble Mason Wasp

Bramble Mason Wasp

Ancistrocerus adiabatus

Daily sighting probability ~10% · With luck
at Acadia National Park

In 3 days ~20% in a week ~40%

28 Verified sightings at Acadia National Park From 2019 to 2026
60 In all 4 parks
July Best month
☀️ Diurnal When it's spotted

About the Bramble Mason Wasp

Ancistrocerus adiabatus is a species of potter wasp. Adults grow up to 11 mm (0.433 in) in length. This species is multivoltine and has been witnessed migrating. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Point Pelee National Park 🇨🇦 Canada
~10%
2 Acadia National Park 🇺🇸 United States
~10%
3 Shenandoah National Park 🇺🇸 United States
~10%
4 Great Smoky Mountains National Park 🇺🇸 United States
<5%

Cities Where Found

# City Country Daily sighting probability
1 Boston 🇺🇸 United States
~10%
2 New York City 🇺🇸 United States
~10%
3 Baltimore 🇺🇸 United States
~10%
4 Minneapolis [Saint Paul] 🇺🇸 United States
~10%
5 Washington 🇺🇸 United States
<5%
6 Toronto 🇨🇦 Canada
<5%
7 Philadelphia 🇺🇸 United States
<5%
8 Chicago 🇺🇸 United States
<5%
9 Montreal 🇨🇦 Canada
<5%
10 Sacramento 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Bramble Mason Wasp in Acadia National Park?

With luck

About 10% of wildlife watchers report a Bramble Mason Wasp sighting in Acadia National Park on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 146th 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.

When is the best time to see a Bramble Mason Wasp in Acadia National Park?

July to October

In those months about 10% of wildlife watchers report a Bramble Mason Wasp in Acadia National Park on a given day, against under 5% in November to June, the lowest months.

What time of day is best to see a Bramble Mason Wasp?

Between 10 am and 1 pm

Across all the parks we cover, that three-hour window holds the most Bramble Mason Wasp sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.

Is Acadia National Park the best place to see a Bramble Mason Wasp?

Among the best

Of the 4 parks where we can rate Bramble Mason Wasp sightings, Acadia National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Point Pelee National Park (Canada, about 10%).

Where does the Bramble Mason Wasp sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Bramble Mason Wasp is recorded against all the insects logged in Acadia 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.

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