flat-footed fly

(Agathomyia spp.)

Overview
flat-footed fly (Agathomyia sp.)
Photo by Alfredo Colon
 
 

Agathomyia is the largest genus of flat-footed flies (Family Platypezidae). There are at least 61 Agathomyia species worldwide, at least 8 species in the United States. There are no previous records of this genus Minnesota.

Agathomyia occur in Europe, Australia, Canada, and northern United States. Larvae develop in fungi. Adults are rarely seen but can be found in forests in late summer and fall.

     
           
 
Description
 
 

Agathomyia are small, slender, uncommon flies. Adults are just 116 to 3 16 (2 to 4.8 mm) long. The last part of the leg (tarsus), corresponding to the foot, is dilated. On the wings, the anal cell is longer than the second basal cell and is pointed at the end.

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 29, 30, 82.

 
  12/31/2020      
         
 
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 (circular-seamed flies)  
  Section Aschiza  
 

Superfamily

Platypezoidea  
 

Family

Platypezidae (flat-footed flies)  
 

Subfamily

Callomyiinae  
       
 

Subordinate Taxa

 
 

flat-footed fly (Agathomyia aestiva)

flat-footed fly (Agathomyia divergens)

flat-footed fly (Agathomyia fenderi)

flat-footed fly (Agathomyia fulva)

flat-footed fly (Agathomyia lutea)

flat-footed fly (Agathomyia notata)

flat-footed fly (Agathomyia pulchella)

flat-footed fly (Agathomyia talpula)

yellow flat-footed fly (Agathomyia wankowiczii) (Canada)

 
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

This genus has no common name. The common name for the family Platypezidae is flat-footed flies, and is applied here for convenience.

 
       

 

 

 

 

 

Glossary

Tarsus

On insects, the last two to five subdivisions of the leg, attached to the tibia; the foot. On spiders, the last segment of the leg. Plural: tarsi.

 

 

 

 

 

       
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Alfredo Colon
       
  flat-footed fly (Agathomyia sp.)    
       
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Other Videos
 
  Eggs laid in fungus create disgusting bumps and holes TRYPOPHOBIA
The Foragers
 
   
 
About

Mar 15, 2018

When we found this mushroom we had no idea why it was covered with these tiny disgusting holes and bumps. Later we found out this is a gall created by eggs laid by Agathomyia wankowiczii, the yellow flat-footed fly. The fly is the only insect which creates a gall on fungus, and only ever on one species of fungus, Ganoderma applanatumThe grubs hatch and fall to the ground out of the little holes. Also it looks horrifying.

   
       

 

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Alfredo Colon
8/13/2019

Location: Woodbury, MN

flat-footed fly (Agathomyia sp.)


     
     
 
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Created: 12/31/2020

Last Updated:

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