chickweed geometer

(Haematopis grataria)

chickweed geometer
Photo by Alfredo Colon
  Hodges #

7146

 
 
Conservation Status
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

     
  Minnesota

not listed

     
           
 
Description
 
 

Chickweed geometer is a medium-sized, slender-bodied, diurnal moth. It is common in the United States east of the Rocky Mountains, including in Minnesota.

The wings are light brownish-yellow (ocher), with pink markings: a broad median band, a weak submarginal band, and a marginal band. The forewing also has a pink discal spot. Both wings have a pink fringe. The cubitus vein (Cu) on the forewing appears to have three branches. The subcostal vein (Sc) on the hindwing is abruptly bent downward at the base.

The antennae of the female are thread-like. Those of the male are feather-like, with fine, very long branches (pectinations) on both sides (bipectinate).

The caterpillar is called an inchworm. It is small, slender, and highly variable in color. It may be green with white stripes, yellowish-green and light brown, or reddish-brown and mottled. The first abdominal segment is slightly enlarged. There are three pairs of leg-like structures (prolegs) on the thorax, two pairs at the end of the abdomen, and none in between.

 
     
 

Size

 
 

Total Length: X¾ to X¾

Wingspan: ¾ to 1

 
     
 

Similar Species

 
  No similar species  
     
 
Habitat
 
 

Prairie grassland, fields, meadows, lawns, and gardens

 
     
 
Biology
 
 

Season

 
 

Two or more generations in Minnesota: Late May to mid-September

 
     
 

Behavior

 
 

Adults fly during the day. They rest with their wings held flat and spread wide.

Caterpillars move forward by drawing the hind end of the abdomen up to the thorax forming a loop and then extending the body forward.

 
     
 

Life Cycle

 
 

The eggs hatch in about seven days. The larvae go through five stages (instars) before reaching maturity in 28 to 30 days. The pupa of the last generation overwinters.

 
     
 

Larva Hosts

 
 

Chckweed, mouse-ear chickweed, knotweed, smartweed, and clover

 
     
 

Adult Food

 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

21, 24, 29, 30, 71, 75.

 
  10/21/2020      
         
 

Occurrence

 
 

Common in the United States east of the Rocky Mountains

 
         
 
Taxonomy
 
 

Order

Lepidoptera (butterflies and moths)  
 

Suborder

Glossata  
 

Infraorder

Neolepidoptera  
  Parvorder Heteroneura  
  No Rank Ditrysia  
  No Rank Obtectomera  
 

Superfamily

Geometroidea (inchworm moths)  
 

Family

Geometridae (geometer moths)  
 

Subfamily

Sterrhinae (waves and mochas)  
 

Tribe

Timandrini  
 

Genus

Haematopis  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

chickweed geometer

chickweed geometer moth

 
       

 

 

 

 

 

 

Glossary

Proleg

A fleshy structure on the abdomen of some insect larvae that functions as a leg, but lacks the five segments of a true insect leg.

 

 

 

 

 

       
Visitor Photos
   

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Alfredo Colon
       
  chickweed geometer   chickweed geometer
       
Margot Avey
       

taken in my back yard (St Louis Park, MN) in the afternoon. The antenna is interesting!

  chickweed geometer    
       
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Other Videos
 
  Chickweed Geometer Moth (Geometridae: Haematopis grataria) on Wall
Carl Barrentine
 
   
 
About

Published on Aug 6, 2011

Photographed on the Wisconsin side of the Mississippi River north of Red Wing, Minnesota (04 August 2011). Thank you to Maury Heiman (@Bugguide.net) for confirming the identity of this specimen!

   
       
  Chickweed Geometer Moth (Geometridae: Haematopis grataria) Dorsal View
Carl Barrentine
 
   
 
About

Published on Aug 17, 2011

Photographed at Fisher, Minnesota (17 August 2011). Thank you to Maury Heiman (@Bugguide.net) for confirming the identity of this specimen!

   
       

 

Camcorder

         
Visitor Sightings
   

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Alfredo Colon
August 2019

Location: Woodbury, Minnesota

chickweed geometer


Margot Avey
9/5/2018

Location: St. Louis Park, MN

taken in my back yard (St Louis Park, MN) in the afternoon. The antenna is interesting!

chickweed geometer


Alfredo Colon
8/31/2018

Location: Woodbury, Minnesota

chickweed geometer


     
     
 
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