Minnesota Beetles

 
Order Coleoptera

Coleoptera (beetles) is the order of insects that is characterized by having a biting mouth and two pairs of wings, the outer pair being hardened and meeting in a straight line down the back.

Coleoptera is the largest order in the animal kingdom. There are about 400,000 described species worldwide, about 24,000 species in 131 families in North America north of Mexico. The total number of species, described and undescribed, is probably close to 1,000,000. It is likely that Coleoptera will be split into two or more orders in the future.


multicolored Asian lady beetle

 

 

           

Recent Additions

 
Rhubarb curculio

Rhubarb curculio (Lixus concavus) is a large, easily identified, true weevil. It is common from New Hampshire, south to North Carolina, and west to Utah. It is uncommon in the upper Midwest, including Minnesota. At up to in length and 3 16 in width, it is one of the largest snout beetles in the United States.

Rhubarb curculio adults are active from mid-May to September. They are found on stalks and leaves of thistles, sunflowers, docks, and rhubarb. They are one of only two weevil species that attack rhubarb. They can be a pest to crops of these plants but they are easily controlled.

Snout beetles are easily identified by their long, flattened or cylindrical snout that is at least as long as the pronotum. Rhubarb curculio is easily identified by the bright yellowish bloom on the head, pronotum, and wing covers.

  rhubarb curculio
  Photo by Alfredo Colon
   
   
   

Colorado potato beetle

Colorado potato beetle (Leptinotarsa decemlineata) is relatively small for a beetle but relatively large for a leaf beetle. Adults are ¼ to 7 16 long and about wide. The body is oval when viewed from above and dome-shaped when viewed from the side. The wing covers are pale yellow with five black lines on each side. The are no similar species in Minnesota.

Prior to European settlement, the Colorado potato beetle was found only in Colorado and neighboring states. The potato was introduced into North America in the 1600s and began to be widely grown in the early 1700s. By 1840 the potato reached the insects home range. By 1859 the insect had switched to the potato as its preferred host, and by 1874 it had spread all the way to the east coast. It is now present across North America, Europe, and Asia.

Colorado potato beetle is a serious crop pest to potato growers. The insect rapidly evolves resistance to chemical pesticides. Many insecticides that once successfully controlled the beetle are no longer effective.

  Colorado potato beetle
  Photo by Alfredo Colon
   
   
   
   
   
   
   

Six-spotted tiger beetle

Six-spotted tiger beetle (Cicindela sexguttata) is a small predaceous, tiger beetle. It is probably the most common species of tiger beetle in eastern North America, possibly the most common on the continent. It is found in the southern two-thirds of Minnesota. Adults and larval burrows are very often seen on paths in the woods. Six-spotted tiger beetle can be thought of as a woodland path species.

The head and body are shiny, iridescent, and usually metallic green, occasionally blue. Flashy tiger beetles (subtribe Cicindelini) are usually identified by the color and pattern of marks on their wing coverings. The common name of this species comes from white spots on the wing covers. There are usually six small spots, often eight, rarely ten, and occasionally none.

  six-spotted tiger beetle
  Photo by Dan W. Andree
   

Eyed click beetle

At 1¾ long this may be the largest click beetle in our area. With its boldly-outlined eye spots it is certainly the most distinctive. The body is long, thin, and black, with mottled patterns of minute, whitish scales. The thorax has a pair of large black spots boldly outlined with white. The spots look like eyes and give this beetle its common name.

On the underside, an elongated lobe on one plate fits into a groove in another plate, allowing the insect to produce an audible click. This feature gives the insect family the common name “click beetles”. If put on its back, the beetle uses this click mechanism to catapult itself up to six inches in the air, righting itself and potentially escaping a predator.

Click beetle larvae are called wireworms. Most wireworms eat plant roots, and can be serious agricultural pests. Eyed click beetle wireworms are carnivorous. The feed on the larvae of other insects, especially wood-boring beetles. This makes them a beneficial insect.

  eyed click beetle
  Photo by Dan W. Andree
   
   
   
   

Oil beetle
   

Oil beetle (Meloe impressus) is an infrequent, medium-sized, blister beetle. Its metallic blue body stands out in sharp relief against green foliage. It lives about one year but has a short season above ground. Adults are active for just two months between August and October. They are found on the ground or on foliage close to the ground. When threatened or mishandled, they exude an oily yellowish liquid that causes blistering on human skin.

Oil beetle larvae pass through four stages and seven molts (instars) before pupating. They live in the nests of solitary, ground-nesting bees, feeding on bee eggs, honey, and stored pollen.

Oil beetles (genus Meloe) are identified by head, body, and legs all metallic blue or black; oval-shaped abdomen; small outer wings (elytra) that overlap at the base and are much shorter than the abdomen; lack of functional inner wings; and antennae that are bent in the middle. This oil beetle (Meloe impressus) is distinguished by the usually brilliant metallic blue, violet, or green, sometimes black coloration; upper margin of the eye that is nearly straight; fifth segment of the antennae enlarged and flared outward; sparse, fine pitting on the head and thorax; thoracic plate with straight sides that converge toward the rear; and a spur on the fourth segment of the hind leg that projects toward the rear.

  oil beetle
   
   

Other Recent Additions
   

Japanese beetle (Popillia japonica)

hispine leaf beetle (Microrhopala xerene)

dung beetle (Scarabaeinae)

splendid earth-boring beetle (Geotrupes splendidus)

dogwood agrilus (Agrilus cephalicus)

eastern rose curculio (Merhynchites bicolor)

  Japanese beetle
   

 

 

 

 

 

 

 

           
Profile Photo Video      

     

a soldier beetle (Silis percomis)

 

American carrion beetle

blue-margined ground beetle

clay-colored leaf beetle

click beetle (Family Elateridae)

Colorado potato beetle

convergent lady beetle

end band net-winged beetle

eyed click beetle

goldenrod soldier beetle

Japanese beetle

maculated dung beetle

margined carrion beetle

multicolored Asian lady beetle

oil beetle

Poplar’s snout weevil

red milkweed beetle

red-blue checkered beetle

rhubarb curculio

seven-spotted lady beetle

spotted lady beetle

swamp milkweed leaf beetle

water scavenger beetle (Tropisternus sp.)

whirligig beetle (Gyrininae)

whitespotted sawyer

winter firefly

  Photo Photo

American carrion beetle (Necrophila americana)

 
     

Asian longhorned beetle (Anoplophora glabripennis)

 
Profile Photo Photo

banded longhorn beetle (Typocerus velutinus)

 
     

banded net-wing beetle (Calopteron reticulatum)

 
     

big sand tiger beetle (Cicindela formosa)

 
     

black blister beetle (Epicauta pennsylvanica)

 
  Photo Photo

black carpet beetle (Attagenus unicolor)

 
     

black firefly (Lucidota atra)

 
  Photo  

blister beetle (Epicauta sp.)

 
    Photo

blue-margined ground beetle (Pasimachus elongatus)

 
Profile Photo Photo

bronzed tiger beetle (Cicindela repanda)

 
Profile Photo Photo

clay-colored leaf beetle (Anomoea laticlavia)

 
  Photo Photo

click beetle (Family Elateridae)

 
Profile Photo Photo

Colorado potato beetle (Leptinotarsa decemlineata)

 
     

common eastern firefly (Photinus pyralis)

 
     

common willow calligrapha (Calligrapha multipunctata)

 
Profile Photo Photo

convergent lady beetle (Hippodamia convergens)

 
     

crimson saltflat tiger beetle (Cicindela fulgida fulgida)

 
     

crimson saltflat tiger beetle (Cicindela fulgida westbournei)

 
     

dock curculio (Lixus mucidus)

 
Profile Photo Photo

dogbane beetle (Chrysochus auratus)

 
Profile Photo  

dogwood agrilus (Agrilus cephalicus)

 
  Photo  

dung beetle (Scarabaeinae)

 
Profile Photo  

eastern rose curculio (Merhynchites bicolor)

 
Profile Photo Photo

end band net-winged beetle (Calopteron terminale)

 
Profile Photo Photo

eyed click beetle (Alaus oculatus)

 
     

false Japanese beetle (Strigoderma arbicola)

 
     

fifteen-spotted lady beetle (Anatis labiculata)

 
     

firefly (Photuris sp.)

 
     

flower longhorn beetle (Strangalia luteicornis)

 
     

flower longhorn beetle (Trigonarthris proxima)

 
     

goldenrod leaf miner (Microrhopala vittata)

 
Profile Photo Photo

goldenrod soldier beetle (Chauliognathus pennsylvanicus)

 
  Photo Photo

green immigrant leaf weevil (Polydrusus formosus)

 
     

green june beetle (Cotinis nitida)

 
Profile Photo  

hairy flower scarab (Trichiotinus assimilis)

 
     

hairy flower scarab (Trichiotinus piger)

 
     

hairy-necked tiger beetle (Cicindela hirticollis rhodensis)

 
     

hickory bark beetle (Scolytus quadrispinosus)

 
     

hispine leaf beetle (Microrhopala cyanea)

 
     

hispine leaf beetle (Microrhopala excavata)

 
     

hispine leaf beetle (Microrhopala rubrolineata)

 
Profile Photo  

hispine leaf beetle (Microrhopala xerene)

 
     

horsemint tortoise beetle (Physonota unipunctata)

 
Profile Photo Photo

Japanese beetle (Popillia japonica)

 
     

Laurentian tiger beetle (Cicindela denikei)

 
     

little white tiger beetle (Cicindela lepida)

 
Profile Photo Photo

maculated dung beetle (Aphodius distinctus)

 
Profile Photo Photo

margined carrion beetle (Oiceoptoma noveboracense)

 
     

margined leatherwing (Chauliognathus marginatus)

 
  Photo Photo

May beetle (Phyllophaga sp.)

 
Profile Photo Photo

Minnesota longhorn beetle (Trigonarthris minnesotana)

 
Profile Photo Photo

multicolored Asian lady beetle (Harmonia axyridis f. succinea)

 
     

nine-spotted lady beetle (Coccinella novemnotata)

 
     

northern barrens tiger beetle (Cicindela patruela patruela)

 
Profile Photo Photo

northern corn rootworm beetle (Diabrotica barberi)

 
Profile Photo Photo

oil beetle (Meloe impressus)

 
    Photo

pedunculate ground beetle (Scarites quadriceps)

 
  Photo  

Pennsylvania firefly (Photuris pennsylvanica)

 
     

Pennsylvania dingy ground beetle (Harpalus pensylvanicus)

 
     

polished lady beetle (Cycloneda munda)

 
Profile Photo  

Poplar’s snout weevil (Lepyrus palustris)

 
Profile Photo Photo

red milkweed beetle (Tetraopes tetrophthalmus)

 
  Photo  

red-blue checkered beetle (Trichodes nutalli)

 
     

red-femured milkweed borer (Tetraopes femoratus)

 
Profile Photo  

rhubarb curculio (Lixus concavus)

 
     

ridged carrion beetle (Oiceoptoma inaequale)

 
     

round-necked longhorn beetle (Clytus ruricola)

 
     

sandy stream tiger beetle (Cicindela macra macra)

 
     

sandy tiger beetle (Cicindela limbata nympha)

 
     

scooped scarab (Onthophagus hecate)

 
Profile Photo Photo

seven-spotted lady beetle (Coccinella septempunctata)

 
Profile Photo Photo

six-spotted tiger beetle (Cicindela sexguttata)

 
Profile Photo  

splendid earth-boring beetle (Geotrupes splendidus)

 
     

splendid tiger beetle (Cicindela splendida cyanocephalata)

 
Profile Photo Photo

spotted lady beetle (Coleomegilla maculata)

 
  Photo Photo

striped cucumber beetle (Acalymma vittatum)

 
Profile Photo  

sumac flea beetle (Blepharida rhois)

 
     

sumac stem borer (Oberea ocellata)

 
Profile Photo Photo

swamp milkweed leaf beetle (Labidomera clivicollis)

 
     

thirteen-spotted lady beetle (Hippodamia tredecimpunctata)

 
  Photo  

toothed click beetle (Denticollis denticornis)

 
     

tumblebug (Canthon laevis)

 
     

tumblebug (Canthon nigricornis)

 
     

tumblebug (Canthon viridis)

 
     

twelve-spotted tiger beetle (Cicindela duodecimguttata)

 
     

vivid metallic ground beetle (Chlaenius sericeus)

 
  Photo Photo

water scavenger beetle (Tropisternus sp.)

 
  Photo Photo

whirligig beetle (Subfamily Gyrininae)

 
Profile Photo Photo

whitespotted sawyer (Monochamus scutellatus scutellatus)

 
Profile Photo Photo

winter firefly (Ellychnia corrusca)

 
         

 

 

No Species Page Yet?

If you do not see a linked page for an insect in the list at left, or the insect does not appear in the list, you can still upload a photo or video as an email attachment or report a sighting for that insect. Click on one of the buttons below and type in the common name and/or scientific name of the insect in your photo, video, or sighting. A new page will be created for that insect featuring your contribution.

 

Capitalization of Common Names

Insect scientific names are governed by the International Commission on Zoological Nomenclature (ICZN). Vernacular (common) names are not. In an attempt to “assure the uniformity of (common) names of common insects” the Entomological Society of America (ESA) published Common Names of Insects and Related Organisms. ESA has no rule or guideline that addresses capitalization of common names. However, the database of common names published by ESA does not capitalize common names. National Center for Biotechnology Information (NCBI) also uses uncapitalized common names. Most other sources, including ITIS, BAMONA, Odonata Central, and the Peterson Field Guides, capitalize common insect names. MinnesotaSeasons.com will adhere to the convention followed by ESA and NCBI.

 

Last Updated:

About Us | Privacy Policy | Contact Us | © 2018 MinnesotaSeasons.com. All rights reserved.