square-headed wasp

(subfamily Crabroninae)

               
Conservation Status

IUCN Red List

 

square-headed wasp

NatureServe

 

Minnesota

 

Occurrence

Common

Flight/Season

 

Habitat

 

Size

 

         
          Photo by Bill Reynolds

Identification

Most species are 5 16 to ¾ long. The thorax and abdomen on most are black with yellowish markings. The upper (dorsal) surface of the first thoracic segment (pronotum) is short and collar-like. The body hairs are unbranched.

The head and eyes are large and together are squarish in appearance. The antennae bases are very low on the face.

On the hind legs the first of the group of terminal segments (tarsi) is slender.

The wing veins extend nearly to the margin. There is only a single submarginal cell on the forewing. The outermost tip (apex) of the marginal cell is squared off.


Larval Food

 

 
Adult Food

 

 
Life Cycle

Females lay their eggs in paralyzed, living prey.

 
Behavior

These are solitary, predatory wasps. They are usually found on flowers.


Distribution Distribution Map  

Sources: 24.


Comments

 


Taxonomy

Order:

Hymenoptera (ants, bees, wasps, and sawflies)

 

Suborder:

Apocrita (wasps, ants and bees)

 

Infraorder:

Aculeata

 

Superfamily:

Apoidea (apoid wasps, bees, sphecoid wasps)

 

Family:

Crabronidae (crabronid wasps, cicadakillers, sand wasps, mud daubers)

 
Subordinate Taxa

Tribe Bothynostethini

Tribe Crabronini

Tribe Larrini

Tribe Miscophini

Tribe Oxybelini

Tribe Palarini

Tribe Trypoxylini

 
Synonyms

 

 
Common
Names

 


 

 

 

 

 

 

 

Glossary

pronotum

The saddle-shaped, exoskeletal plate on the upper side of the first segment of the thorax of an insect.

 

tarsus

The last two to five sections of an insect’s leg, attached to the tibia; the foot.

 

 

 

 

 

 

       

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Bill Reynolds


  square-headed wasp    

       
       
       

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Other Videos

 
  Male Square-headed Wasp
BinghamKeiser
 
   
 
About

Published on Feb 9, 2014

This guy works out :) It has an extended front tibiae that looks like a shield. He was running around a Pomelo tree in the orchard.

 
     
  Square-headed Wasps (Crabronidae: Ectemnius or Crabro?) Mating Behavior, Part 1 of 2
Carl Barrentine
 
   
 
About

Carl Barrentine

Photographed at the Turtle River State Park, North Dakota (12 June 2012). Thank you to John Ascher (@Bugguide.net) for identifying the family and subfamily for these wasps!

 
     
  Square-headed Wasps (Crabronidae: Ectemnius or Crabro?) Mating Behavior, Part 2 of 2
Carl Barrentine
 
   
 
About

Published on Jun 13, 2012

Photographed at the Turtle River State Park, North Dakota (12 June 2012). Thank you to John Ascher (@Bugguide.net) for identifying the family and subfamily for these wasps!

 
     

 

Camcorder

         

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Bill Reynolds
8/4/2003

Location: St. Louis Co., MN

 

square-headed wasp


     
     
 

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