robber fly

Family Asilidae

               
 

 

robber fly (Machimus sp.)
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

        Photo by Bill Reynolds

Identification

 

 
Similar
Species

 


Larval Food

 

 
Adult Food

 

 
Life Cycle

 

 
Behavior

 


Distribution Distribution Map   Sources: 7, 24.

Comments

 


Taxonomy

Order:

Diptera (gnats, mosquitoes, true flies)

 

Suborder:

Brachycera (circular-seamed flies, mouches muscoïdes, muscoid flies, short-horned flies)

 

Infraorder:

Muscomorpha

 

Superfamily:

Asiloidea

 

Family:

Asilidae (robber flies)

 
Subordinate Taxa

brown robber fly (Proctacanthella cacopiliga)

giant robber fly (Promachus vertebratus)

 
Common
Names

robber fly


 

 

 

 

 

 

 

       

Visitor Photos

   
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Bill Reynolds


Hunting flies.

Image cropped to give some idea of size. The screw is a typical dry wall screw of an 1.5 inch

  robber fly (Asilidae)    
       

Machimus sp. female

It looks like it has caught a Crane fly for dinner.

  robber fly (Machimus sp.)    

Kirk Nelson


I had taken a photo of an interesting insect, and when I looked more closely, I could see it had captured another insect.

  robber fly (Asilidae)   robber fly (Asilidae)

       
       

MinnesotaSeasons.com Photos

   

giant robber fly (Promachus vertebratus)

  giant robber fly (vertebratus)    
       
       

 

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  Robber Flies
Andree Reno Sanborn
 
  Robber Flies  
 
About

Family Asilidae

In North America, 883 species(1)

About 530 general and 7,000 described species worldwide (Asilidae Home Page)

Medium-sized to large predatory flies, often perch in exposed location and make short flies after prey. Typical family characteristics:

top of head hollowed out between eyes, with three ocelli in this depression (diagnostic character)

body from very hairy to nearly bare

typical body form elongated, with tapered abdomen, but other forms as well

some groups mimics of hymenoptera

face usually "bearded", with prominent mystax

mouthparts modified to inject saliva into prey--saliva contains potent neurotoxic and proteolytic enzymes

mouthparts similar in both sexes, unlike typical blood-sucking flies, such as Tabanidae

antennae with three segments, third segment elongate and often with terminal style

source: bugguide.net

bugguide.net/node/view/151

 
     

 

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Visitor Sightings

   
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Bill Reynolds
8/22/2003

Location: Numedal Township, Pennington Co., Minnesota

Hunting flies. Image cropped to give some idea of size. The screw is a typical dry wall screw of an 1.5 inch

robber fly (Asilidae)


Kirk Nelson
8/18/2013

Location: Upper Sioux Agency State Park

I had taken a photo of an interesting insect, and when I looked more closely, I could see it had captured another insect.

robber fly (Asilidae)


Bill Reynolds
8/22/2003

Location: St. Louis Co.

It looks like it has caught a Crane fly for dinner.

robber fly


     
     
 

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