toothed somberwing

(Euclidia cuspidea)

toothed somberwing
  Hodges #

8731

 
 
Conservation Status
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

     
  Minnesota

not listed

     
           
 
Description
 
 

Toothed somberwing is a stout, medium-sized moth. The adult is about long and has a wingspan of 1 to 17 16.

The forewing is mottled dark brown and purplish-gray with dark, blackish-brown markings. The markings include an antemedian band with a prominent triangular tooth on the lower (proximal) side; an inconspicuous, zig-zag, postmedian line; a prominent triangle below (distal to) the reniform spot; and a subapical spot at the margin that connects to a small triangle. Some individuals have a broad pale submarginal band. Two blackish-brown spots surrounded by gray in the basal area near the inner margin lend to the appearance of a face.

The hindwing is dark brown from the base to the median area. It is yellowish-brown from the median area to the margin except for a dark submarginal line. The hindwings and forewings are held in contact by bristles (a frenulum) and scales (a retinaculum).

The antennae are slender and threadlike, not feathered.

The caterpillar is slender, brown and finely striped. A thin brown spiracular stripe is bordered on each side by a thin pale stripe. There are no leg-like structures (prolegs) on abdominal segment 3 but there are reduced prolegs on segment 4.

 
     
 

Size

 
 

Wingspan: 1 to 17 16

Total Length: about

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

Meadows, woodland edges and openings, with long grass

 
     
 
Biology
 
 

Season

 
 

Probably one generation in Minnesota: Mid-May to early July

 
     
 

Behavior

 
 

It is active both day and night. When flushed from vegetation it flies rapidly for about 20 yards then drops to the ground. It rests with the wings held flat and the hindwings usually concealed. It is attracted to light.

 
     
 

Life Cycle

 
 

Pupa overwinter

 
     
 

Larva Hosts

 
 

Clover, lupine, sweetfern, and grasses

 
     
 

Adult Food

 
 

 

 
     
 
Distribution
 
 

Distribution Map

 

Sources

7, 21, 29, 75.

 
  2/13/2016      
         
 

Occurrence

 
 

Common and widespread

 
         
 
Taxonomy
 
 

Order

Lepidoptera (butterflies and moths)  
 

Suborder

Glossata  
 

Infraorder

Neolepidoptera  
  Parvorder Heteroneura  
  No Rank Ditrysia  
  No Rank Obtectomera  
 

Superfamily

Noctuoidea (noctuid moths)  
 

Family

Erebidae  
 

Subfamily

Erebinae  
 

Tribe

Euclidiini  
 

Genus

Euclidia  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

toothed somberwing

toothed somberwing moth

 
       

 

 

 

 

 

 

Glossary

frenulum

A spine (male) or multiple spines (female) at the base of the costal edge of the hindwing of many moths that couples with the retinaculum on the forewing to keep the wings in contact which each other.

 

Reniform spot

A kidney-shaped spot or outline in the outer median area near the postmedial line on the forewing of many moths.

 

 

 

 

 

 
 
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    toothed somberwing   toothed somberwing  
           

 

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