Kansas lady beetle

(Scymnus kansanus)

Conservation Status
Kansas lady beetle
Photo by Alfredo Colon
  IUCN Red List

not listed

 
  NatureServe

not listed

 
  Minnesota

not listed

 
           
           
           
           
 
Description
 
 

Kansas lady beetle is a very small dusky lady beetle. There are few scattered records of this species, probably due more to its small size than to its rarity. It has been reported in New York, New Jersey, Tennessee, Indiana, Wisconsin, Minnesota, and Kansas. In 2008 it was reported for the first time in South Dakota. It has also been reported in southern Quebec and Ontario Canada. There are eight observations reported from Minnesota, all of them in 2021.

The larvae feed on soft scale insects and aphids. Adults are found from mid-May through early September.

Adults are small, 116 (1.8 to 2.2 mm) in length. The body is thickly covered with bristly hairs (setose). It is somewhat elongated when viewed from above, and it is hemispherical when viewed from the side.

The head is deeply inserted into the thorax, but it is visible from above. The eyes are large and are separated by two times their width. The antennae are short and have 10 or 11 segments. The first two segments are not enlarged. The last three segments are slightly expanded, forming a club. The two segments at the base of the club are uneven at the lower margins.

The upper thoracic plate (pronotum) is convex and wider than long. It is rounded in front, and there is a broad, deep notch on the rear margin. It is entirely reddish yellow with no black markings. It is narrower at the rear than the hardened wing covers (elytra).

The elytra are elongated oval, parallel sided in the middle. They are entirely black except for a narrow, reddish-yellow, rear margin.

The legs are yellowish-brown. 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. On the male, the inner claw is larger than the outer claw.

 
     
 

Size

 
 

Total length: 116 (1.8 to 2.2 mm)

 
     
 

Similar Species

 
     
     
 
Habitat
 
 

 

 
     
 
Biology
 
 

Season

 
 

Mid-May through early September

 
     
 

Behavior

 
 

 

 
     
 

Life Cycle

 
 

 

 
     
 

Larva Food

 
 

 

 
     
 

Adult Food

 
 

Soft scale insects and aphids

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 29, 30, 82, 83.

 
  12/29/2023      
         
 

Occurrence

 
 

Uncommon?

 
         
 
Taxonomy
 
 

Order

Coleoptera (beetles)  
 

Suborder

Polyphaga (water, rove, scarab, long-horned, leaf, and snout beetles)  
 

Infraorder

Cucujiformia  
 

Superfamily

Coccinelloidea (lady, fungus, scavenger, and bark beetles)  
 

Family

Coccinellidae (lady beetles)  
 

Subfamily

Scymninae  
 

Tribe

Scymnini (dusky lady beetles)  
 

Genus

Scymnus  
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

Kansas lady beetle

 

 

 

 

 

 

 

Glossary

Elytra

The hardened or leathery forewings of beetles used to protect the fragile hindwings, which are used for flying. Singular: elytron.

 

Pronotum

The exoskeletal plate on the upper side of the first segment of the thorax of an insect.

 

Seta

A stiff, hair-like process on the outer surface of an organism. In Lepidoptera: A usually rigid bristle- or hair-like outgrowth used to sense touch. In mosses: The stalk supporting a spore-bearing capsule and supplying it with nutrients. Plural: setae. Adjective: setose.

 

Tarsus

On insects, the last two to five subdivisions of the leg, attached to the tibia; the foot. On spiders, the last segment of the leg. Plural: tarsi.

 

 

 

 

 
 
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Alfredo Colon

 
    Kansas lady beetle      
           
 
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  Alfredo Colon
6/4/2021

Location: Woodbury, MN

Kansas lady beetle  
           
 
MinnesotaSeasons.com Sightings
 
 

 

 

 

 

Binoculars


Created: 12/29/2023

Last Updated:

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