American pelecinid wasp

(Pelecinus polyturator)

Information

American pelecinid wasp - Species Profile

American pelecinid wasp - Featured photo
Photo by Scott Bemman

Conservation Status

IUCN Red List

not listed

NatureServe

not listed

Minnesota

not listed

Description

American pelecinid wasp is a black, shiny, vespoid wasp.

Females can reproduce without fertilization, and males of this species are rare. Males are ½ to or 1 long. The posterior end of the abdomen is club-shaped.

The females are 2 to 2 long, relatively common, and distinctive. The abdomen is long and slender. It has six segments and is five times the length of the rest of the body.

The hindwings of both sexes are the length of the forewings.

Size

Male: ½ to or 1 long

Female: 2 to 2 long

Similar Species

No similar species

Habitat

Deciduous forests

Ecology

Season

July to August

Behavior

 

Life Cycle

The female thrusts its ovipositor into the soil to detect beetle grubs. It lays a single egg on each. The wasp larva burrows into and feeds on the grub. It overwinters in the soil.

Larva Food/Hosts

May beetle (Phyllophaga) grubs

Adult Food

Flower nectar

Distribution

Distribution Map
7/12/2025

Sources

7, 24, 27, 29, 30, 82, 83.

Biodiversity occurrence data published by: Minnesota Biodiversity Atlas (accessed through the Minnesota Biodiversity Atlas Portal, bellatlas.umn.edu, 7/12/2025).

Occurrence

Common

Taxonomy

Order

Hymenoptera (Ants, Bees, Wasps, and Sawflies)

Suborder

Apocrita (Narrow-waisted Wasps, Ants, and Bees)

Infraorder

Proctotrupomorpha

Superfamily

Proctotrupoidea

Family

Pelecinidae

Genus

Pelecinus

Subordinate Taxa

 

Synonyms

Ichneumon polyturator

Common Names

American pelecinid

American pelecinid wasp

black pelecinid wasp

Photos

Visitor Photos

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Matt

American pelecinid wasp 04
1st one I've ever seen.

Brian Johnson

American pelecinid wasp 02
Lorem_ipsum

Minnesota Seasons Photos

American pelecinid wasp 01

Slideshows

Slideshows

American pelecinid wasp
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About

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Videos

Visitor Videos

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Other Videos

American pelecinid wasp (Pelecinidae: Pelecinus polyturator) Female on Table
Carl Barrentine

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American pelecinid wasp? (Pelecinidae: Pelecinus polyturator?) Resting Male?
Carl Barrentine

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American pelecinid wasp (Pelecinidae: Pelecinus polyturator) Female Grooming
Carl Barrentine

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American pelecinid wasp (Pelecinidae: Pelecinus polyturator) Feeding on Leaf Surface
Carl Barrentine

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Sightings

Visitor Sightings

Report a sighting of this insect.

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Laura Herron
8/9/2026

American pelecinid wasp

Location: Baldwin, MN, Sherburne County

Nicole Rojas-Oltmanns
8/24/2023

American pelecinid wasp

Location: Northeastern MN

Matt
8/27/2022

American pelecinid wasp

Location: Columbus, Ohio

1st one I've ever seen.

Shawn Dause
8/8/2021

Location: Almora, MN

Scott Bemman
August 2020

American pelecinid wasp

Location: Baker Park Reserve

TPS
8/7/2015

Location: Saint Paul, MN

I'd never seen or heard of this until late last night when one (female) flew about my bedroom as I was about to go to sleep. Was startled by its appearance after getting a clear view of it with my glasses on.

Had to find out what it was. Have lived in Minnesota my entire life (51 years) and this was a first.

Brian Johnson
8/31/2014

American pelecinid wasp

Location: northern St. Louis County, Fairbanks

never seen one before.

The Novaks
8/25/2013

Just found your site when trying to identify an insect we have never seen before. We found photos and made a positive ID - the bug we found is the female pelecinid wasp.

We noticed that there were only three areas listed where this insect has been found in Minnesota. We found the insect in St. Louis County in the Side Lake area, more specifically, at Perch Lake. Just thought you might like to know about where we found the insect.

Joshua D. Haglund
8/9/2012

Hello MinnesotaSeason.com!!

I killed 3 female pelecinid wasps in Pennington County,
Thief River Falls, MN

... if you want to update your locations spotted.

One crawled at me fast, like a scorpion about to attack...
Good thing they don't fly very fast.

This is the first time I've seen them. I had to figure out what they were.

Thanks for the site

Minnesota Seasons Sightings