Colorado potato beetleOverview of the dorsal anatomy of a BeetleLarva of the cockchafer (Melolontha melolontha)
Discover great deals on the many hard to find and one of a kind items available only on ebay!

Beetle

Beetles are one of the main groups of insects. Their order, Coleoptera (meaning "sheathed wing"), has more species in it than any other order in the entire animal kingdom. Forty percent of all described insect species are beetles (about 350,000 species), and new species are regularly discovered. more...

HomeHome
AmphibianAmphibian
ArthropodArthropod
AntAnt
AphidAphid
BedbugBedbug
BeeBee
BeetleBeetle
Black WidowBlack Widow
BumblebeeBumblebee
CentipedeCentipede
CrabCrab
CricketCricket
Daddy LonglegsDaddy Longlegs
DragonflyDragonfly
EarthwormEarthworm
EarwigEarwig
FireflyFirefly
GlowwormGlowworm
GnatGnat
GrasshopperGrasshopper
Hermit CrabHermit Crab
HornetHornet
KatydidKatydid
LadybugLadybug
LiceLice
LobsterLobster
LocustLocust
MayflyMayfly
MillipedeMillipede
MosquitoMosquito
MothMoth
Praying MantisPraying Mantis
ScarabScarab
ScorpionScorpion
Sea MonkeySea Monkey
ShrimpShrimp
SpiderSpider
TarantulaTarantula
TickTick
TrilobiteTrilobite
WaspWasp
Wolf SpiderWolf Spider
YellowjacketYellowjacket
BirdBird
CatCat
DinosaurDinosaur
DogDog
FishFish
MammalMammal
MythologicalMythological
ReptileReptile


Estimates put the total number of species — described and undescribed — at between 5 and 8 million. This is why, when J. B. S. Haldane, a British geneticist, was asked what his studies of nature revealed about God, he replied, "An inordinate fondness for beetles".

Beetles can be found in almost all habitats, but are not known to occur in the sea or in the polar regions. They have a major impact on the ecosystem in three ways: feeding on plants and fungi, breaking down animal and plant debris, and eating other invertebrates. Certain species are agricultural pests in some areas, for example the Colorado potato beetle (Leptinotarsa decemlineata), while other species are important controls of agricultural pests, for example the lady beetles (family Coccinellidae) consume aphids, fruit flies, thrips, and other plant-sucking insects that damage crops.

Anatomy

Bearing in mind the wide diversity and number of species the anatomy of beetles is quite uniform. Beetles are generally characterised by a particularly hard exoskeleton, and the hard wing-cases (elytra) which tend to cover the hind part of the body and protect the second wings, the alae. The elytra are not used in flying, but generally must be raised in order to move the hindwings. In some cases the ability to fly has been lost, characteristically in families such as Carabidae and Curculionidae. After landing, the hindwings are folded below the elytra.

In a few families, both the ability to fly and the wing-cases have been lost, with the best known example being the "glowworms" of the family Phengodidae, in which the females are larviform throughout their lives.

The bodies of beetles are divided into three sections, the head, the thorax, and the abdomen, and these in themselves may be composed of several further segments.

The eyes are compound, and may display some remarkable adabtability, as in the case of the Whirligig beetles (family Gyrinidae), in which the eyes are split to allow a view both above and below the waterline. The dorsal appendage aids the beetle in stalking prey.

Antennae can vary greatly and may be filiform, claviform, flabellate or genticulate.

Oxygen is taken in via a tracheal system: this takes air in through a series of tubes along the body which is then taken into increasingly finer fibres. Pumping movements of the body force the air through the system. Although beetles have blood, it is not used for oxygen transference, although a heart is present.

Development

Beetles are endopterygotes with complete metamorphosis. The larva of a beetle is often called a grub and represents the principal feeding stage of the life-cycle.

The eggs of beetles are minute but may be brightly coloured, they are laid in clumps and there may be from several dozen to several thousand eggs laid by a single female.

Once the egg hatches the larvae tend to feed voraciously, whether out in the open such as with Ladybird larvae, or within plants such as with leaf beetle larvae.

As with lepidoptera, beetle larvae pupate for a period, and from the pupa emerges a fully formed beetle or imago.

In some cases there are several transitory larvae stages and this is known as hypermetamorphosis; examples include the blister beetles (family Meloidae).

Physiology

There are few things that a beetle somewhere will not eat, even inorganic matter may be consumed.

Some beetles are highly specialised in their diet; for example, the Colorado potato beetle (Leptinotarsa decemlineata) opts almost entirely to colonize plants of the potato family (Solanaceae). Others are generalists, eating both plants and animals. Ground beetles (family Carabidae) and rove beetles (family Staphylinidae) are entirely carnivorous and will catch and comsume small prey such as earthworms and snails.

Decaying organic matter is a primary diet for many species, this can range from dung which is consumed by coprophagous species such as the scarab beetles (family Scarabaeidae), to dead animals which are eaten by necrophagous species such as the carrion beetles (family Silphidae). The beneficial impact to the general ecology of these two activities is huge.

Various techniques are employed by many species for retaining both air and water supplies. Predaceous diving beetles (family Dytiscidae) may be the most common example, they employ a technique of retaining air when diving between the abdomen and the elytra.

Reproduction

The larval period of beetles varies between species but can be as long as several years. Adults have an extremely variable lifespan, again, from weeks to years.

Beetles may display some extremely intricate behaviour when mating. Smell is thought to play significant importance in the location of a mate.

Conflict can play a part in the mating rituals for example in species such as burying beetles (genus Nicrophorus) where localised conflicts between males and females rage until only one of each is left, thus ensuring reproduction by the strongest and fittest. Many beetles are territorial and will fiercly defend their small patch of territory from intruding males.

Pairing is generally short but in some cases will last for several hours. During pairing sperm cells are transferred to the female to fertilise the egg.

Parental care

As befitting such a large order, the parental care between species varies widely. It ranges from the simple laying of eggs under a leaf to scarab beetles, which construct impressive underground structures complete with a supply of dung to house and feed their young.

There are other notable ways of caring for the eggs and young, such as those employed by leaf rollers, who bite sections of leaf causing it to curl inwards and then lay the eggs, thus protected, inside.

Generally the number of eggs laid is an indicator of the level of parental care subsequently employed, as they are inversely proportional.

Read more at Wikipedia.org


[List your site here Free!]

Fashion Heart Beetle Charm Bracelets Bangles For Women Gold PlatedFashion Heart Beetle Charm Bracelets Bangles For Women Gold Plated $10.81 Lady Bird Beetle Brooch Pin Unisex Animal Insect Lover Corsage JewelryLady Bird Beetle Brooch Pin Unisex Animal Insect Lover Corsage Jewelry $2.40
Galaxy S5 Active Case, Supcase Unicorn Beetle Pro Series Full-body Hybrid Case wGalaxy S5 Active Case, Supcase Unicorn Beetle Pro Series Full-body Hybrid Case w $23.47 1998 - 2002 Volkswagon Beetle Rh Passenger Side inside door handle Black Used Oe1998 - 2002 Volkswagon Beetle Rh Passenger Side inside door handle Black Used Oe $50.00
Ac Compressor Zexel Compressor Fits 99-01 Beetle 917304Ac Compressor Zexel Compressor Fits 99-01 Beetle 917304 $85.00 Samsung Galaxy Note 5 Supcase Unicorn Beetle Rugged Holster Fullbody Case BlackSamsung Galaxy Note 5 Supcase Unicorn Beetle Rugged Holster Fullbody Case Black $21.45
Collectible Beetle Bailey Giant Size #-1 October 1992 Harvey Classics Comic BookCollectible Beetle Bailey Giant Size #-1 October 1992 Harvey Classics Comic Book $3.99 Blue Beetle #4 Cully Hamner Variant Nm Giffen Kolins Dc comics Rebirth 1st PrintBlue Beetle #4 Cully Hamner Variant Nm Giffen Kolins Dc comics Rebirth 1st Print $2.39
1pair real insect green beetle&black scorpion Xmas gift clear style key-chain1pair real insect green beetle&black scorpion Xmas gift clear style key-chain $5.19 Was: Previous Price $7.99 Tamiya 5Mm Adjuster Ends (6) Blackfoot Bruiser Monster Beetle Fox Bigwig & MoreTamiya 5Mm Adjuster Ends (6) Blackfoot Bruiser Monster Beetle Fox Bigwig & More $1.87 Was: Previous Price $2.28
Doodlebug Mini Doilies (75 Pack), Beetle BlackDoodlebug Mini Doilies (75 Pack), Beetle Black $18.38 Umpqua Fat Head Beetle Fly Fishing Terrestrials Size 14 - 2 PackUmpqua Fat Head Beetle Fly Fishing Terrestrials Size 14 - 2 Pack $4.95
Green Beetle Framed Art Print - 10.5x14Green Beetle Framed Art Print - 10.5x14 $37.98 Steering Gear/Rack Fits 01-07 Beetle 286487Steering Gear/Rack Fits 01-07 Beetle 286487 $315.00
Sterling International Jbtz-Db12 Japanese Beetle Trap, Reusable - Quantity 1Sterling International Jbtz-Db12 Japanese Beetle Trap, Reusable - Quantity 1 $12.68 Beetle Bailey Beetle Squares White Men's Adult Short Sleeve T-ShirtBeetle Bailey Beetle Squares White Men's Adult Short Sleeve T-Shirt $19.99 to $23.99
Samsung Galaxy S7 Case Premium Unicorn Supcase Beetle Series Protective ClearSamsung Galaxy S7 Case Premium Unicorn Supcase Beetle Series Protective Clear $17.99 1940 Vintage Beetle Bronze Lagarto Shoes Purse Andrew Geller Insect Art Ad1940 Vintage Beetle Bronze Lagarto Shoes Purse Andrew Geller Insect Art Ad $2.99 Was: Previous Price $4.99
Galaxy Tab S3 9.7 Case, Supcase [Heavy Duty] [Unicorn Beetle Pro Series] RuggedGalaxy Tab S3 9.7 Case, Supcase [Heavy Duty] [Unicorn Beetle Pro Series] Rugged $28.89 Apple Watch Case Supcase [Unicorn Beetle Pro] Rugged Protective Case with Str.Apple Watch Case Supcase [Unicorn Beetle Pro] Rugged Protective Case with Str. $20.80
Beetle Bits Glass Cutting System 24" Ruler Compass Dial Oil Well Angle Rest MoreBeetle Bits Glass Cutting System 24" Ruler Compass Dial Oil Well Angle Rest More $81.99 99 00 01 02 03 04 05 06 07 08 09 10 Beetle Front Passenger Door Glass Used#171-V99 00 01 02 03 04 05 06 07 08 09 10 Beetle Front Passenger Door Glass Used#171-V $59.03 Was: Previous Price $64.87
Camper Beetle 18751 Brown Mens Leather Trainers ShoesCamper Beetle 18751 Brown Mens Leather Trainers Shoes $148.85 8Pcs Wholesale Insects Beautiful Golden Scorpion Fine Beetle Keychain8Pcs Wholesale Insects Beautiful Golden Scorpion Fine Beetle Keychain $6.49 Was: Previous Price $9.99
*New Swarovski Crystal Beetle Pin Brooch*L@K*Rare**New Swarovski Crystal Beetle Pin Brooch*L@K*Rare* $54.13 12pcs Multi-color Plastic Insect Beetle Gag Gifts Pretend Play Model Toy12pcs Multi-color Plastic Insect Beetle Gag Gifts Pretend Play Model Toy $3.76
Great Beetle Larvae Coleoptera Insect Inclusion Genuine Baltic Amber 170905-42Great Beetle Larvae Coleoptera Insect Inclusion Genuine Baltic Amber 170905-42 $9.99 Country Editor - Henry Beetle Caldone Adams 1940 August 11 Ny Times Book ReviewCountry Editor - Henry Beetle Caldone Adams 1940 August 11 Ny Times Book Review $16.99
Pet Dog Cat Winter Warm Cartoon Animal Fleece Puppy Hooded Coat Clothes CostumePet Dog Cat Winter Warm Cartoon Animal Fleece Puppy Hooded Coat Clothes Costume $10.00 to $15.53 Blue Beetle against Magno Man 1960's Charlton Publishing Rare !Blue Beetle against Magno Man 1960's Charlton Publishing Rare ! $29.99
Bellin: America Animals Rhinoceros Beetle - 1750Bellin: America Animals Rhinoceros Beetle - 1750 $25.00 Chrome Tune Exhaust Pipe for 1/6 Fg 4Wd Baja Marder Beetle Stadium TruckChrome Tune Exhaust Pipe for 1/6 Fg 4Wd Baja Marder Beetle Stadium Truck $52.99
Rescue! Jbtz Non-Toxic Disposable Japanese and Oriental Beetle TrapRescue! Jbtz Non-Toxic Disposable Japanese and Oriental Beetle Trap $11.54 Captain Atom V.2 #85 Nightshade-Ditko-Third New Blue Beetle comic bookCaptain Atom V.2 #85 Nightshade-Ditko-Third New Blue Beetle comic book $43.20
Fuel Tank 2.0L Fits 98-01 Beetle 4583869Fuel Tank 2.0L Fits 98-01 Beetle 4583869 $298.96 Bright Green Sumatran Flower Beetle Rhomborrhina gigantea Male Fast From UsaBright Green Sumatran Flower Beetle Rhomborrhina gigantea Male Fast From Usa $5.49
Czechoslovakia, 2x cover Fdc 1962, insect beetleCzechoslovakia, 2x cover Fdc 1962, insect beetle $4.00 Vintage 1958 Comic Pencil Holder w/ Popeye, Donald Duck, Beetle Bailey, DagwoodVintage 1958 Comic Pencil Holder w/ Popeye, Donald Duck, Beetle Bailey, Dagwood $15.00
Turbocharger Intercooler Hose-Hose(Molded - Standard) fits 98-03 Beetle 1.9L-L4Turbocharger Intercooler Hose-Hose(Molded - Standard) fits 98-03 Beetle 1.9L-L4 $79.27 Marvel Legends Spider-Man Infinite Series Deadliest Foes Beetle 6" Figure NewMarvel Legends Spider-Man Infinite Series Deadliest Foes Beetle 6" Figure New $16.99
A3 06-13 Beetle 12 Eos 07-12 Gti 07-12 Jetta 06-12 Front Lower Ball JointsA3 06-13 Beetle 12 Eos 07-12 Gti 07-12 Jetta 06-12 Front Lower Ball Joints $99.95 Serpentine Belt-Century Series Premium Oe Micro-V Belt fits 99-03 Beetle 1.9L-L4Serpentine Belt-Century Series Premium Oe Micro-V Belt fits 99-03 Beetle 1.9L-L4 $46.93 List price: Previous Price $85.33
Husky Liners 89311 Classic Style; Floor Liner Fits 98-09 Beetle Golf JettaHusky Liners 89311 Classic Style; Floor Liner Fits 98-09 Beetle Golf Jetta $129.95 1.5" Beetle Bodies Yellow with a Black Stripe Crappie, Bass, Perch 50 Ea1.5" Beetle Bodies Yellow with a Black Stripe Crappie, Bass, Perch 50 Ea $5.25
Chassis Ecm Transmission Right Hand Dash 1.8L Turbo Fits 99-01 Beetle 417541Chassis Ecm Transmission Right Hand Dash 1.8L Turbo Fits 99-01 Beetle 417541 $54.60 Disney's: Herbie Remote Control BeetleDisney's: Herbie Remote Control Beetle $50.00
Front Bumper Reinf Fits 98-03 Beetle 203766Front Bumper Reinf Fits 98-03 Beetle 203766 $165.00 Engine Ecm Fits 01 Beetle 417538Engine Ecm Fits 01 Beetle 417538 $100.31
Apple iPhone 7 Supcase Unicorn Beetle Series Premium Hybrid Clear Frost CaseApple iPhone 7 Supcase Unicorn Beetle Series Premium Hybrid Clear Frost Case $16.75
Click to see more Beetle items at www.ebay.com
Prices current as of last update, 09/19/17 9:00am.

Home Contact Resources Exchange Links eBay