small dung fly

(Family Sphaeroceridae)

               
 

 

small dung fly (Sphaeroceridae)
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

          Photo by Bill Reynolds
 
Identification

This is a family of very common, very small, “acalyptrate” flies.

Adults are blackish or brownish and range in size from 132 to 3 16 long.

There is a frontal suture on the face immediately behind the bases of the antennae. The antennae have three segments. The second segment does not have a longitudinal suture. There is a large bristle on the upper (dorsal) side of the third segment.

There is no lobe (calypter) at the base of the forewing. The wings are clear, rarely spotted. The vein behind the leading edge (costa) of the forewing (subcostal vein) is incomplete, fading out before connecting with the costa.

The first segment of the hind foot (tarsus) is thick and is shorter than the second segment.

 
Similar
Species

 

 
Larval Food

Dung, fungi, seaweed, and decaying organic matter.

 
Adult Food

 

 
Life Cycle

 

 
Behavior

 

 
Distribution Distribution Map  

Sources: 24.

 
Comments

 

 
Taxonomy

Order:

Diptera (gnats, mosquitoes, true flies)

 

Suborder:

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

 

Infraorder:

Muscomorpha

  No Rank:

Eremoneura

  No Rank:

Cyclorrhapha

 

Section:

Schizophora (muscoid flies)

 

Subsection:

Acalyptratae (acalyptrates)

 

Superfamily:

Sphaeroceroidea

 

Family:

Sphaeroceridae (small dung flies)

 
Synonyms

 

 
Common
Names

lesser dung flies

small dung flies

 

 

 

 

 

 

 

Glossary

Costa

In plants: The central axis of a pinna, to which pinnules are attached. In insects: The leading edge of the forewing.

 

Tarsus

The last two to five subdivisions of an insect’s leg, attached to the tibia; the foot. Plural: tarsi.

 

 

 

 

 

       
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Bill Reynolds
       
  small dung fly (Sphaeroceridae)    
       
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Bill Reynolds
8/26/2014

Location: Pennington Co MN

 

small dung fly (Sphaeroceridae)


     
     
 
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