tachinid fly

(Cylindromyia interrupta)

Conservation Status
tachinid fly (Cylindromyia interrupta)
Photo by Alfredo Colon
  IUCN Red List

not listed

     
  NatureServe

not listed

     
  Minnesota

not listed

     
           
           
           
           
 
Description
 
 

Cylindromyia interrupta is a small tachinid fly. It occurs in northern Europe, Scandinavia, and across North America.

Adults are slender, wasp-like, and ¼ to 5 16 (6 to 8 mm) long.

There are two large compound eyes at the side of the head and three small simple eyes (ocelli) in a triangle at the top of the head. The compound eyes are brown. They do not meet at the top of the head in either sex. The antennae are black, moderately long, and have three segments. The second segment has a longitudinal groove (suture) on top. The third segment has a short, forward-pointed bristle (arista) on the upper side. The arista is bare, not feather-like (plumose). The protruding mouthpart (proboscis) is slender but is not much elongated.

The thorax is narrow, barely as wide as the head. It is mostly black but appears frosty white (pruinose) in the shoulder (humeral) area. The plate between the wings (scutellum) is colored the same as the thorax. It has only one pair of long, black, bristles at the rear margin.

The abdomen is narrow, elongated, and black, and is armed with long, stiff, black bristles. The first abdominal segment is very small and is not visible from above. On the second and third segments there is a row of bristles on the upper middle and a row on each side. On the fourth and fifth segments there is a row at the rear margin. There is a white, very narrow band at the base of the second and third segments. There is also a broad reddish band that wraps around the the bottom and sides of the abdomen but is interrupted on the top, leaving a broad black stripe. It is variable in size, usually extending over most of the second segment and about half of the third.

As with all flies, there is only one pair of wings, the hind wings being reduced to small, knob-like structures (halteres) that are used for balance in flight. The wings are narrow and smoky brown. At the base of each wing there are two small, rounded lobes (calypters) that cover the halteres. The calypters are well-developed and bright white.

The legs are long, stout, and entirely black.

 
     
 

Size

 
 

Total Length: ¼ to 5 16 (6 to 8 mm)

Wingspan: ½ (12 mm)

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

Open, dry, weedy areas

 
     
 
Biology
 
 

Season

 
 

May to August

 
     
 

Behavior

 
 

 

 
     
 

Life Cycle

 
 

 

 
     
 

Larva Food

 
 

Stink bugs (Pentatomidae), short-horned grasshoppers (Acrididae), and moths

 
     
 

Adult Food

 
 

Nectar and pollen of flowers in the family Apiaceae (carrot).

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 29, 30.

 
  9/13/2019      
         
 

Occurrence

 
 

Widespread

 
         
 
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  
  No Rank Schizophora  
  No Rank Calyptratae  
 

Superfamily

Oestroidea  
 

Family

Tachinidae (tachinid flies)  
 

Subfamily

Phasiinae  
 

Tribe

Cylindromyiini  
 

Genus

Cylindromyia  
  Subgenus Cylindromyia  
       
 

Synonyms

 
 

Cylindromyia dosiades lobata

Ocyptera dosiades

Ocyptera interrupta

 
       
 

Common Names

 
 

This species has no common name. The common name for the family Tachinidae is tachinid flies, and is applied here for convenience.

 
       

 

 

 

 

 

 

 

Glossary

Arista

A large bristle on the upper side of the third segment of the antenna of a fly.

 

Calypter

On flies: one of two small membranous lobes at the base of the forewing that covers the haltere. On mosses: A thin cap that covers and protects the capsule and operculum and drops off at maturity.

 

Halteres

In flies: a pair of knob-like structures on the thorax representing hind wings that are used for balance.

 

Ocellus

Simple eye; an eye with a single lens. Plural: ocelli.

 

Proboscis

The protruding mouthpart(s) of a sucking insect.

 

Scutellum

The exoskeletal plate covering the rearward (posterior) part of the middle segment of the thorax in some insects. In Coleoptera, Hemiptera, and Homoptera, the dorsal, often triangular plate behind the pronotum and between the bases of the front wings. In Diptera, the exoskeletal plate between the abdomen and the thorax.

 

 

 

 

 

 
 
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Alfredo Colon

 
    tachinid fly (Cylindromyia interrupta)      
 

 

 
 

 

 
           
           
 
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  Alfredo Colon
7/21/2018

Location: Woodbury, Minnesota

tachinid fly (Cylindromyia interrupta)  
           
 
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Created: 2/4/2019

Last Updated:

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