Common Marauder

Common Marauder

Proctacanthus milbertii

Daily sighting probability <5% · Rare
at Toronto

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

27 Verified sightings at Toronto
16 In 1 park From 2019 to 2026
August 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 Toronto?

Rare

Under 5% of wildlife watchers report a Common Marauder sighting in Toronto on a given day, based on 27 verified sightings from GBIF citizen-science data. It is the 557th most-seen of the 1689 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 Common Marauder in Toronto?

August

In that month about 10% of wildlife watchers report a Common Marauder in Toronto on a given day, against under 5% in September 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.

Is Toronto the best place to see a Common Marauder?

Yes

Of the 2 cities where we can rate Common Marauder sightings, Toronto has the highest daily chance: under 5%. Next come Chicago (United States, under 5%).

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 Toronto (27 verified sightings), 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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