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Published byLenard Rose Modified over 9 years ago
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The most diverse group of organisms on Earth – over 300,000 species
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Total 1,392,485 # of described species of organisms on Earth
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# of insect species in N. America: ca. 90,000 # of beetle species: ca. 30,000 # of families: 111
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mandibles antennae elytra (hard fore wings) membraneous hind wings abdomen Beetle structure
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Rove beetles – Staphylinidae The largest family of beetles in N. America 3,100 species
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Curculio elephas European Chestnut Weevil Weevils – Curculionidae The largest family of beetles (and probably animals) in the world Second largest in North America 2,500 species
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Weevils can be pests (alfalfa weevil) or beneficial (attacking invasive weeds) Hypera postica – Alfalfa weevil
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Ground beetles - Carabidae Calosoma scrutator Caterpillar hunter Third largest family in N. America – 1,700 species
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Chlaenius sp. Vivid metallic ground beetle Ground beetles - Carabidae
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Bluemargined ground beetle Pasimachus elongatus Ground beetles - Carabidae
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Big sand tiger beetle Tiger beetles - Cicindelidae Cicindela formosa
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Cicindela willistoni Tiger beetles - Cicindelidae Tiger beetles and Ground beetles are active predators
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Cicindela sexguttata Six-spotted Green Tiger beetle Tiger beetles - Cicindelidae
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Leaf beetles - Chrysomelidae Fourth largest family in N. America – 1,500 species
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Leaf beetles - Chrysomelidae Many pests belong to this family Colorado potato beetle
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Leaf beetles - Chrysomelidae Potato flea beetle Northern corn root worm Western corn root worm Spotted cucumber beetle
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Phanaeus sp. Scarab beetles - Scarabaeidae Fifth largest family in N. America – 1,400 species
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Scarab beetles - Scarabaeidae Canthon sp. Dung beetles
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Japanese Beetle (Popillia punctata) Scarab beetles - Scarabaeidae
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Cotinis nitida Scarab beetles - Scarabaeidae Green June beetle Larvae – “grubs”
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Scarab beetles - Scarabaeidae Rhinoceros beetle
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0 8 in Goliath beetle – the largest beetle in the world
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Stag beetles – Lucanidae Larvae develop for up to 5 years in decaying wood
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Darkling beetles – Tenebrionidae Sixth largest family of beetles in North America 1,300 species
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Longhorned beetles - Cerambycidae Plectrodera scalator Cottonwood borer 1,100 species in N. America
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Dryobius sexnotatus Longhorned beetles - Cerambycidae Six-banded longhorned beetle
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Small mulberry borer Longhorned beetles - Cerambycidae Dorcaschema alternatum
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Longhorned beetles (Cerambycidae) Elm borerElder borer Larvae live in wood Saperda tridentata Desmocerus palliatus
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Click beetles - Elateridae AdultLarva – “Wireworm” 800 species in N. America
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Metallic wood-boring beetles - Buprestidae 700 species in N. America
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Metallic wood-boring beetles - Buprestidae
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Bark beetles - Scolytidae About 500 species in N. America Mountain pine beetle Dendroctonus ponderosae
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Bark beetles - Scolytidae Mountain pine beetle damage
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Bark beetle damage
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Soldier beetles - Cantharidae About 500 species in N. America
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Lady beetles - Coccinellidae Coleomegilla maculata Pinkspotted lady beetle 400 species in N. America
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Lady beetles - Coccinellidae Pinkspotted lady beetle – efficient biocontrol agent
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Lady beetles - Coccinellidae Lady beetle larva is a ferocious predator
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Blister beetles - Meloidae 330 species in N. America
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Blister 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 - Silphidae Burying beetles Nicrophorus spp. 50 species in N. America
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Silpha americana Carrion beetles - Silphidae American carrion beetle – endangered species
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