chickweed geometer

(Haematopis grataria)

               
Hodges #

7146

chickweed geometer

 

Conservation Status

IUCN Red List

not yet assessed

NatureServe

NNR - Unranked

Minnesota

not listed

Occurrence

Common in the United States east of the Rocky Mountains

Flight/Season

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

Habitat

Prairie grassland, fields, meadows, lawns, and gardens

Photo by Alfredo Colon
Size

Total Length: X¾ to X¾

Wingspan: ¾ to 1

 

Identification

This 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.

 
Similar
Species

No similar species


Larval Food

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

 
Adult Food

 

 
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.

 
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,


Distribution Distribution Map  

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


Comments

 


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

 
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

   
Share your photo of this insect.

Margot Avey


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

  chickweed geometer    

Alfredo Colon


  chickweed geometer    

       
       
       

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Slideshows

   
  Chickweed Geometer Moth
Henryr10
 
   
 
About

Haematopis grataria

 
     

 

slideshow

     

Visitor Videos

   
Share your video of this insect.

     
     

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

   
Share your sighting of this insect.

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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