fifteen-spotted lady beetle

(Anatis labiculata)

Conservation Status
fifteen-spotted lady beetle
Photo by Alfredo Colon
  IUCN Red List

not listed

     
  NatureServe

NNR - Unranked

     
  Minnesota

not listed

     
           
           
           
 
Description
 
 

Fifteen-spotted lady beetle is a large “giant lady beetle.” It occurs in North America east of the Great Plains. It is most common in the United States from Maine to Minnesota in the north to Virginia and Missouri in the south.

The body is almost round, very convex, ¼ to (7.2 to 9.5 mm) long, and 3 16 to 5 16 (5.5 to 8.0 mm) wide.

The head is shallowly inserted into the thorax, but is visible from above.

The upper thoracic plate (pronotum) is convex and wider than long. It is white with a large black spot in the center and a small black spot on each lateral margin. The central black spot has two white spots at the base and looks vaguely like a W or M, depending on if it is viewed from the front (W) or from behind (M).

The thick, hardened, shell-like forewings (elytra) are strongly convex and very narrowly flattened at the margins. They completely cover the abdomen. The background color is variable but the pattern is not. They may be gray, yellowish-orange, or dark brownish-red, but they always have fifteen black spots. Each elytron has eight spots in a 2-3-3 pattern. The spot in the middle at the base merges with one on the opposite elytron and is counted as a single spot, giving a total count of fifteen. The spots are never ringed with white or yellow. As the beetle ages, the elytra become darker. Older individuals are very dark reddish-brown to almost black, making the spot pattern difficult to see.

The legs are yellowish-brown. The fourth segment (tibia) on the middle and hind legs have two spurs at the tip. The last part of each leg (tarsus), corresponding to the foot, has four segments, but the third segment is very short and tucked within the extended lobes of the second segment, making the leg appear to have only three segments. The tip of the last tarsal segment on the middle and hind legs has a pair of claws. Each claw has a large tooth at the base.

 
     
 

Size

 
 

Total Length: ¼ to (7.2 to 9.5 mm)

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

Forests and woodlands

 
     
 
Biology
 
 

Season

 
 

April to July

 
     
 

Behavior

 
 

 

 
     
 

Life Cycle

 
 

 

 
     
 

Larva Food

 
 

 

 
     
 

Adult Food

 
 

Aphids on coniferous and deciduous trees

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 27, 29, 30.

 
  6/10/2019      
         
 

Occurrence

 
 

 

 
         
 
Taxonomy
 
 

Order

Coleoptera (beetles)  
 

Suborder

Polyphaga (water, rove, scarab, longhorn, leaf and snout beetles)  
 

Infraorder

Cucujiformia  
 

Superfamily

Cucujoidea  
 

Family

Coccinellidae (ladybird beetles)  
 

Subfamily

Coccinellinae  
 

Tribe

Coccinellini  
 

Genus

Anatis  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

fifteen-spotted lady beetle

fifteen-spotted ladybird beetle

 
       

 

 

 

 

 

 

 

Glossary

Elytra

The hardened or leathery forewings on an insect used to protect the fragile hindwings, which are used for flying, in beetles and true bugs. Singular: elytron.

 

Pronotum

The saddle-shaped, exoskeletal plate on the upper side of the first segment of the thorax of an insect.

 

Tarsus

The last two to five subdivisions of an insect’s leg, attached to the tibia; the foot. Plural: tarsi.

 

Tibia

The fourth segment of an insect leg, after the femur and before the tarsus (foot).

 

 

 

 

 

       
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Alfredo Colon
       
  fifteen-spotted lady beetle   fifteen-spotted lady beetle
       
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Other Videos
 
  Fifteen-spotted Lady Beetle (Coccinellidae: Anatis labiculata) Close-up
Carl Barrentine
 
   
 
About

Published on Jun 24, 2010

This specimen has emerged from the pupa stage within the last day, and is nestled here against the carcass of a dead Tent Caterpillar (Lasiocampidae). Photographed at Turtle River State Park, North Dakota (24 June 2010).

   
       
  Fifteen-spotted Lady Beetle (Coccinellidae: Anatis labiculata) on the Move
Carl Barrentine
 
   
 
About

Published on Jun 6, 2011

Photographed at Turtle River State Park, North Dakota (06 June 2011).

   
       
  Fifteen-spotted Lady Beetle (Coccinellidae: Anatis labiculata)
Carl Barrentine
 
   
 
About

Published on Jun 12, 2010

I understand that the elytra darken with age, and so this must be a very aged specimen. Photographed at Turtle River State Park, North Dakota (11 June 2010).

   
       

 

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Alfredo Colon
8/20/2018

Location: Woodbury, Minnesota

fifteen-spotted lady beetle


     
     
 
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Created: 6/10/2019

Last Updated:

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