American Pelecinid Wasp

American Pelecinid Wasp

Pelecinus polyturator

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

In 3 days ~20% in a week ~50%

20 Verified sightings at Shenandoah National Park From 2019 to 2026
177 In all 10 parks
August Best month
☀️ Diurnal When it's spotted

About the American Pelecinid Wasp

Pelecinus polyturator is a species of wasp in the family Pelecinidae. The large (up to 7 cm) glossy black insects are the most common and well-known members of the family. The adults drink nectar, and they live in crop fields, woods, and suburban gardens throughout North, Central, and South America. Their antennae are long and the females have an elongated, cylindrical, articulated metasoma. They are parasitoids that lay their eggs directly into grubs of the June beetle (genus Phyllophaga) buried in the soil. The adults can be found in the late summer.

Some populations of Pelecinus polyturator are parthenogenic; females do not require fertilization by males to reproduce. Females are common throughout its range, but males are rare in the United States and Canada specially in some populations, and more prevalent further south. Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Chirripó National Park 🇨🇷 Costa Rica
~20%
2 Itatiaia National Park 🇧🇷 Brazil
~10%
3 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
~10%
4 Los Nevados National Natural Park 🇨🇴 Colombia
~10%
5 Acadia National Park 🇺🇸 United States
~10%
6 Cape Breton Highlands National Park 🇨🇦 Canada
~10%
7 Shenandoah National Park 🇺🇸 United States
~10%
8 Great Smoky Mountains National Park 🇺🇸 United States
~10%
9 Tijuca National Park 🇧🇷 Brazil
~10%
10 La Amistad International Park (Panama) 🇵🇦 Panama
~10%

Cities Where Found

# City Country Daily sighting probability
1 Montreal 🇨🇦 Canada
~10%
2 Denver 🇺🇸 United States
~10%
3 Minneapolis [Saint Paul] 🇺🇸 United States
<5%
4 Toronto 🇨🇦 Canada
<5%
5 Detroit 🇺🇸 United States
<5%
6 Medellín 🇨🇴 Colombia
<5%
7 São Paulo 🇧🇷 Brazil
<5%
8 Washington 🇺🇸 United States
<5%
9 Chicago 🇺🇸 United States
<5%
10 New York City 🇺🇸 United States
<5%

Before you go

What are the chances of seeing an American Pelecinid Wasp in Shenandoah National Park?

With luck

About 10% of wildlife watchers report an American Pelecinid Wasp sighting in Shenandoah National Park on a given day, based on 20 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 185th most-seen of the 723 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.

When is the best time to see an American Pelecinid Wasp in Shenandoah National Park?

August

In that month about 20% of wildlife watchers report an American Pelecinid Wasp in Shenandoah National Park on a given day, against under 5% in November to June, the lowest months.

What time of day is best to see an American Pelecinid Wasp?

Between 10 am and 1 pm

Across all the parks we cover, that three-hour window holds the most American Pelecinid Wasp sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.

Where does the American Pelecinid Wasp sighting chance come from?

GBIF citizen-science records

It is estimated from how often the American Pelecinid Wasp is recorded against all the insects logged in Shenandoah National Park (20 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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