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The most diverse group of The most diverse group of organisms on Earth – over organisms on Earth – over
300,000 species300,000 species
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Virus (1000)Bacteria (4760)Fungi (46983)Algae (26900)Plants (248428)Protozoa (30800)Worms (48000)Molluscs (50000)Insects (751000)Other arthropods (123161)Vertebrates (43853)
Total 1,392,485Total 1,392,485
# of described species of organisms on # of described species of organisms on EarthEarth
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# of # of insectinsect species in N. America: species in N. America:ca. 90,000ca. 90,000
# of # of beetlebeetle species: ca. 30,000 species: ca. 30,000# of families: 111# of families: 111
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mandiblesmandibles
antennaeantennae
elytra elytra (hard (hard fore wings)fore wings)
membraneousmembraneoushind wingshind wings
abdomenabdomen
Beetle structureBeetle structure
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Rove beetles – StaphylinidaeRove beetles – StaphylinidaeThe largest family of beetles in N. AmericaThe largest family of beetles in N. America
3,100 species3,100 species
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Curculio elephasCurculio elephas European Chestnut WeevilEuropean Chestnut Weevil
Weevils – CurculionidaeWeevils – CurculionidaeThe largest family of beetles (and probably animals) in the worldThe largest family of beetles (and probably animals) in the world
Second largest in North AmericaSecond largest in North America2,500 species2,500 species
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Weevils can be pests (alfalfa weevil) or Weevils can be pests (alfalfa weevil) or beneficial (attacking invasive weeds)beneficial (attacking invasive weeds)
Hypera posticaHypera postica – Alfalfa weevil – Alfalfa weevil
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Ground beetles - CarabidaeGround beetles - Carabidae
Calosoma scrutatorCalosoma scrutator
Caterpillar hunter
Third largest family in N. America – 1,700 speciesThird largest family in N. America – 1,700 species
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Chlaenius sp.Chlaenius sp.
Vivid metallic ground beetleVivid metallic ground beetle
Ground beetles - CarabidaeGround beetles - Carabidae
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Bluemargined ground beetleBluemargined ground beetle
Pasimachus elongatus Pasimachus elongatus
Ground beetles - CarabidaeGround beetles - Carabidae
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Big sand tiger beetleBig sand tiger beetle
Tiger beetles - CicindelidaeTiger beetles - Cicindelidae
Cicindela formosaCicindela formosa
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Cicindela willistoniCicindela willistoni
Tiger beetles - CicindelidaeTiger beetles - Cicindelidae
Tiger beetles and Ground beetles are active predatorsTiger beetles and Ground beetles are active predators
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Cicindela sexguttataCicindela sexguttata
Six-spotted Green Tiger beetleSix-spotted Green Tiger beetle
Tiger beetles - CicindelidaeTiger beetles - Cicindelidae
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Leaf beetles - ChrysomelidaeLeaf beetles - ChrysomelidaeFourth largest family in N. America – 1,500 speciesFourth largest family in N. America – 1,500 species
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Leaf beetles - ChrysomelidaeLeaf beetles - ChrysomelidaeMany pests belong to this familyMany pests belong to this family
Colorado potato beetleColorado potato beetle
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Leaf beetles - ChrysomelidaeLeaf beetles - Chrysomelidae
Potato flea beetlePotato flea beetle
Northern corn root wormNorthern corn root worm
Western corn root wormWestern corn root worm
Spotted cucumber beetleSpotted cucumber beetle
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Phanaeus sp.Phanaeus sp.
Scarab beetles - ScarabaeidaeScarab beetles - ScarabaeidaeFifth largest family in N. America – 1,400 speciesFifth largest family in N. America – 1,400 species
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Scarab beetles - ScarabaeidaeScarab beetles - Scarabaeidae
Canthon sp.Canthon sp. Dung beetlesDung beetles
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Japanese Beetle (Popillia punctata)
Scarab beetles - ScarabaeidaeScarab beetles - Scarabaeidae
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Cotinis nitidaCotinis nitida
Scarab beetles - ScarabaeidaeScarab beetles - Scarabaeidae
Green June beetleGreen June beetle
Larvae – “grubs”Larvae – “grubs”
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Scarab beetles - ScarabaeidaeScarab beetles - Scarabaeidae
Rhinoceros beetleRhinoceros beetle
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00 8 in 8 in
Goliath beetle – the largest beetle in the worldGoliath beetle – the largest beetle in the world
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Stag beetles – LucanidaeStag beetles – Lucanidae
Larvae develop for up to Larvae develop for up to 5 years in decaying wood5 years in decaying wood
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Darkling beetles – TenebrionidaeDarkling beetles – Tenebrionidae
Sixth largest family of beetles in North AmericaSixth largest family of beetles in North America1,300 species1,300 species
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Longhorned beetles - CerambycidaeLonghorned beetles - Cerambycidae
Plectrodera scalatorPlectrodera scalator
Cottonwood borerCottonwood borer
1,100 species in N. America1,100 species in N. America
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Dryobius sexnotatusDryobius sexnotatus
Longhorned beetles - CerambycidaeLonghorned beetles - Cerambycidae
Six-banded longhorned beetleSix-banded longhorned beetle
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Small mulberry borerSmall mulberry borer
Longhorned beetles - CerambycidaeLonghorned beetles - Cerambycidae
Dorcaschema alternatumDorcaschema alternatum
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Longhorned beetles (Cerambycidae)Longhorned beetles (Cerambycidae)
Elm borerElm borer Elder borerElder borer
Larvae live in woodLarvae live in wood
Saperda tridentataSaperda tridentata Desmocerus palliatusDesmocerus palliatus
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Click beetles - ElateridaeClick beetles - Elateridae
AdultAdult Larva – “Wireworm”Larva – “Wireworm”
800 species in N. America800 species in N. America
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Metallic wood-boring beetlesMetallic wood-boring beetles- Buprestidae- Buprestidae
700 species in N. America700 species in N. America
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Metallic wood-boring beetles - BuprestidaeMetallic wood-boring beetles - Buprestidae
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Metallic wood-boring beetles - BuprestidaeMetallic wood-boring beetles - Buprestidae
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Bark beetles - ScolytidaeBark beetles - ScolytidaeAbout 500 species in N. AmericaAbout 500 species in N. America
Mountain pine beetleMountain pine beetle
Dendroctonus ponderosaeDendroctonus ponderosae
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Bark beetles - ScolytidaeBark beetles - Scolytidae
Mountain pine beetle damageMountain pine beetle damage
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Bark beetle damageBark beetle damage
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Soldier beetles - CantharidaeSoldier beetles - CantharidaeAbout 500 species in N. AmericaAbout 500 species in N. America
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Lady beetles - CoccinellidaeLady beetles - Coccinellidae
Coleomegilla maculataColeomegilla maculata
Pinkspotted lady beetlePinkspotted lady beetle
400 species in N. America400 species in N. America
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Lady beetles - CoccinellidaeLady beetles - Coccinellidae
Pinkspotted lady beetle – efficient biocontrol agentPinkspotted lady beetle – efficient biocontrol agent
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Lady beetles - CoccinellidaeLady beetles - Coccinellidae
Lady beetle larva is a ferocious predatorLady beetle larva is a ferocious predator
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Blister beetles - MeloidaeBlister beetles - Meloidae330 species in N. America330 species in N. America
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Blister beetles - MeloidaeBlister beetles - Meloidae PESTS or ALLIES?PESTS or ALLIES?
•Toxic to horses – may poison hayToxic to horses – may poison hay•Natural enemies of grasshoppersNatural enemies of grasshoppers
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Carrion beetles - SilphidaeCarrion beetles - Silphidae
Burying beetlesBurying beetles
Nicrophorus spp. Nicrophorus spp.
50 species in N. America50 species in N. America
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Silpha americanaSilpha americana
Carrion beetles - SilphidaeCarrion beetles - Silphidae
American carrion beetle – endangered speciesAmerican carrion beetle – endangered species
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