bronzed tiger beetle

(Cicindela repanda)

               
Conservation Status

IUCN Red List

not yet assessed

bronzed tiger beetle

NatureServe

N5 - Secure

S5 - Secure

Minnesota

not listed

Occurrence

Common and abundant

Flight/Season

March to July and August to October

Habitat

Open, sunny, sandy, gravelly, or clay, sparsely vegetated areas adjacent to streams and rivers; beaches, sandbars, mud flats.

Size

to ½

Photo by Kirk Nelson

Identification

This is a small tiger beetle. It is one of the most common species of tiger beetle in North America. Adults are to ½ long.

The hardened wing coverings (elytra) are dark brown with pale markings. They are widest beyond the middle. Between the bases of the elytra there is a small triangular plate (scutellum) that is visible when the beetle is viewed from above. The pale markings on the elytra are essential in identifying the species. The front area of the elytra (humeral region), closest to the head, has a crescent-shaped mark (linule) consisting of a dot at the forward outer corner (humerus), a posthumeral dot, and a curved marginal line connecting them. The humeral linule on each elytra points the one on the other elytra. The middle area (middle region) has a more or less S-shaped middle band and a marginal band. The middle band is complete, not broken into dots. The marginal band is connected to, or only narrowly removed from, the humeral linule. The rear area (apical region) has a linule consisting of a dot at the tip of the elytra, a subapical dot, and a curved marginal line connecting them.

The plate covering the thorax (pronotum) dark brown, coppery tinged, and hairy. The front angle of the pronotum is rounded and does not conspicuously project forward. The pronotum is narrower than the head and narrower than the base of the elytra.

The eyes are large and bulging. The antennae are thread-like and are inserted above the base of the mandible. The mouthpart between the mandibles (labrum), often likened to an upper lip, is small and has a single tooth.

The legs are long and slender. All legs have five end segments (tarsi).

 
Similar
Species

Twelve-spotted tiger beetle (Cicindela duodecimguttata) front angle of the pronotum is angled, not rounded. The humeral linule is broken and is separated from the marginal line by a wide gap.


Larval Food

Any insect the larva can get into its hole

 
Adult Food

Mostly insects but occasionally also fruit

 
Life Cycle

After mating the female digs a hole in the soil, deposits a single egg, then covers the hole. The egg hatches and the emergent larva burrows further into the soil creating a tunnel. It then sits on top of the burrow, anchors itself using a hook on the fifth abdominal segment, and waits for any insect unlucky enough to pass by. When it detects prey it seizes the insect, drags it to the bottom of the tunnel, and eats it there.

The bronzed tiger beetle lives about two years. The larva passes through three stages (instars) before it pupates. It overwinters the first year as a third instar, the second year as an adult. Adults emerge from the pupal stage in late summer and fall. Overwintering adults may survive into July or even August, overlapping the next generation.

 
Behavior

Adults are active during the day. They are fast runners.


Distribution Distribution Map  

Sources: 24, 29.


Comments

 


Taxonomy

Order:

Coleoptera (beetles)

 

Suborder:

Adephaga (Ground and Water Beetles)

 

Superfamily:

Caraboidea

 

Family:

Carabidae (ground beetles)

 

Subfamily:

Cicindelinae (tiger beetles)

 

Tribe:

Cicindelini (flashy tiger beetles)

 

Genus:

Cicindela (common tiger beetles)

 

Subgenus:

Cicindela

 
Subordinate Taxa

bronzed tiger beetle (Cicindela repanda repanda)

Nova Scotia tiger beetle (Cicindela repanda novascotiae)

Tanner’s tiger beetle (Cicindela repanda tanneri)

 
Synonyms

 

 
Common
Names

bronzed tiger beetle

common shore tiger beetle


 

 

 

 

 

 

Glossary

elytra

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

 

linule

A crescent-shaped mark. On some tiger beetles (Cicindela spp.) an important identification mark.

 

pronotum

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

 

scutellum

The exoskeletal plate covering the rearward (posterior) part of the middle segment of the thorax in some insects. In Coleoptera, Hemiptera, and Homoptera, the dorsal, often triangular plate behind the pronotum and between the bases of the front wings. In Diptera, the exoskeletal plate between the abdomen and the thorax.

 

tarsus

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

 

 

 

 

 

       

Visitor Photos

   
Share your photo of this insect.

Kirk Nelson


On the banks of the Mississippi River

  bronzed tiger beetle    
       

Seen on Picnic Island; fairly abundant

  bronzed tiger beetle    

       
       

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Slideshows

   
  Bronzed Tiger Beetle (Cicindela repanda)
Bill Keim
 
  Bronzed Tiger Beetle (Cicindela repanda)  

 

slideshow

     

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Other Videos

 
  Cicindela repanda repanda 1
Mathew Brust
 
   
 
About

Published on Apr 5, 2015

High densities of Cicindela repanda repanda at Box Butte Reservoir in Dawes County, Nebraska on April 4, 2015.

 
     
  Cicindela repanda repanda 2
Mathew Brust
 
   
 
About

Published on Apr 5, 2015

Cicindela repanda repanda at Box Butte Reservoir in Dawes County, Nebraska on April 5, 2015.

 
     
  Bronzed Tiger Beetle (Carabidae: Cicindela repanda) Caught in Web
Carl Barrentine
 
   
 
About

Uploaded on Jul 11, 2009

Photographed at the Rydell NWR, Minnesota (11 July 2009).

 
     
  Bronzed Tiger Beetle (Carabidae: Cicindela repanda)
Carl Barrentine
 
   
 
About

Uploaded on Apr 17, 2010

Anterior and lateral views of a Tiger Beetle. Photographed at the Rydell NWR, Minnesota (17 April 2010).

 
     

 

Camcorder

         

Visitor Sightings

   
Share your sighting of this insect.

Kirk Nelson
4/16/2016

Location: Hidden Falls Park; St Paul

On the banks of the Mississippi River

bronzed tiger beetle


Kirk Nelson
8/30/2015

Location: Fort Snelling State Park

Seen on Picnic Island; fairly abundant

bronzed tiger beetle


     
     
 

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