Common Marauder

Common Marauder

Proctacanthus milbertii

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

In 3 days ~30% in a week ~50%

16 Verified sightings at Point Pelee National Park From 2019 to 2026
16 In 1 park
September Best month
☀️ Diurnal When it's spotted

About the Common Marauder

Proctacanthus milbertii, or Milbert's proctacanthus, is a species of robber flies (insects in the family Asilidae). Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Point Pelee National Park 🇨🇦 Canada
~10%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Toronto 🇨🇦 Canada
<5%
2 Chicago 🇺🇸 United States
<5%

Before you go

What are the chances of seeing a Common Marauder in Point Pelee National Park?

With luck

About 10% of wildlife watchers report a Common Marauder sighting in Point Pelee National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 73rd most-seen of the 196 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.

When is the best time to see a Common Marauder in Point Pelee National Park?

September

In that month about 30% of wildlife watchers report a Common Marauder in Point Pelee National Park on a given day, against under 5% in October to July, the lowest months.

What time of day is best to see a Common Marauder?

Between 3 and 6 pm

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

Where else can you see a Common Marauder?

Only Point Pelee National Park, in our data

Point Pelee National Park is the only park on Wallace's Line with enough records to rate Common Marauder sightings: about 10% of wildlife watchers there report one on a given day.

Where does the Common Marauder sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Common Marauder is recorded against all the insects logged in Point Pelee National Park (16 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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