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"The mature beetle in life rivals asparagi in beauty, but may be distinguished by its much broader elytra and its color. The ground color is orange red; each elytron is marked with six black dots, and the knees and a portion of the under surface of the thorax are also marked with black. The beetle, as it occurs on the plant when in fruit, very closely resembles at a little distance the ripening asparagus berry."—Government Printing Office, 1897

Crioceris 12-Punctata

"The mature beetle in life rivals asparagi in beauty, but may be distinguished by its much broader elytra…

Illustrated is the adult of a borer larva.

Adult Beetle

Illustrated is the adult of a borer larva.

"Agonoderus dorsalis (Le Conte). Vertical line shows natural size."-Whitney, 1902

Agonoderus

"Agonoderus dorsalis (Le Conte). Vertical line shows natural size."-Whitney, 1902

"Agrilus ruficollis. a, anal end of body of larva; b, larva; c, beetle. (The vertical lines show natural sizes.)"-Whitney, 1902

Agrilus

"Agrilus ruficollis. a, anal end of body of larva; b, larva; c, beetle. (The vertical lines show natural…

"Allorhina nitida- readily distinguished by the fact that the epimera of the mesothorax are visible from above as a triangular piece between the prothorax and the elytra."-Whitney, 1902

Allorhina

"Allorhina nitida- readily distinguished by the fact that the epimera of the mesothorax are visible…

Antenna of leaf-eating beetle, showing smelling pits on the expanded terminal segments.

Antenna

Antenna of leaf-eating beetle, showing smelling pits on the expanded terminal segments.

Anthribus Latirostris.

Anthribus Latirostris

Anthribus Latirostris.

Scene showing various animals of the Division <em>Articulata</em>.

Articulata

Scene showing various animals of the Division Articulata.

"Asparagus-Beetle (Crioceris asparagi). a,b,d and e, beetle eggs, and larv&aelig;, natural size; c and f, eggs and larva, enlarged."-Whitney, 1902

Asparagus Beetle

"Asparagus-Beetle (Crioceris asparagi). a,b,d and e, beetle eggs, and larvæ, natural size; c and…

Bedbug.

Bedbug

Bedbug.

Beetles have two pair of wings with the first pair being hard and horny, (Wood, 1896). (Wood, 1896).

Beetle

Beetles have two pair of wings with the first pair being hard and horny, (Wood, 1896). (Wood, 1896).

Water Beetles, beetles which live on or in the water.

Beetle

Water Beetles, beetles which live on or in the water.

"Beetle (Magnified)."-Whitney, 1902

Beetle

"Beetle (Magnified)."-Whitney, 1902

This is an illustration of the pine-destroying beetle of the Black Hills; a, adult beetle, enlarged; b, adult beetle, natural size.

Beetle

This is an illustration of the pine-destroying beetle of the Black Hills; a, adult beetle, enlarged;…

Illustration of a small beetle known as Systena blanda.

Beetle

Illustration of a small beetle known as Systena blanda.

An illustration of a large black beetle.

Beetle

An illustration of a large black beetle.

Beetles are the group of insects with the largest number of known species. The general anatomy of beetles is quite uniform, although specific organs and appendages may vary greatly in appearance and function between the many families in the order. Like all insects, beetles' bodies are divided into three sections: the head, the thorax, and the abdomen. We see here the long-horned borer beetle showing the larva, pupa, and adult insect.

Beetle

Beetles are the group of insects with the largest number of known species. The general anatomy of beetles…

Illustrated is a beetle, showing different parts.

Beetle

Illustrated is a beetle, showing different parts.

An illustration of a beetle on a leaf and a butterfly.

Beetle & Butterfly

An illustration of a beetle on a leaf and a butterfly.

Pictured is a beetle borer and its work. The larva bores in the young wood of raspberry and blackberry.

Beetle Borer

Pictured is a beetle borer and its work. The larva bores in the young wood of raspberry and blackberry.

This illustration shows a tree that has been damaged by a sprice-destroying beetle. a, primary gallery; b, borings packed in side; e, entrance and central burrow through the packed borings; d, larval mines-note how the eggs are grouped on the sides.

Beetle Damage

This illustration shows a tree that has been damaged by a sprice-destroying beetle. a, primary gallery;…

An illustration of a beetle fossil.

Beetle Fossil

An illustration of a beetle fossil.

"Beetle Pupa (Magnified)."-Whitney, 1902

Beetle Pupa

"Beetle Pupa (Magnified)."-Whitney, 1902

Also known as Crioceris asparagi.Spray of asparagus, with common asparagus beetle in its different stages. This beetle feeds only on asparagus, and it strips the leaves of the plant to prevent it from photosynthesizing.

Asparagus Beetle

Also known as Crioceris asparagi.Spray of asparagus, with common asparagus beetle in its different stages.…

Scolytus Ulmi.

European Elm Bark Beetle

Scolytus Ulmi.

"The <em>Leptura Mordax</em>, or <em> Rhagium Mordax</em> of Europe, three-fourths of an inch long, bites severely when captured with the hand." &mdash Goodrich, 1859

Blackspotted Pliers Support Beetle

"The Leptura Mordax, or Rhagium Mordax of Europe, three-fourths of an inch long,…

Lytta Vesicatoria, common name Blister Beetle.

Blister Beetle

Lytta Vesicatoria, common name Blister Beetle.

Beetles (Coleoptera) in the family Meloidae are commonly known as blister beetles, after their defensive secretion of a blistering agent, cantharidin. There are approximately 2,500 known species worldwide. Many are conspicuous and some aposematically colored, announcing their toxicity to would-be predators.

Blister Beetle

Beetles (Coleoptera) in the family Meloidae are commonly known as blister beetles, after their defensive…

"The bombadier beetle has a large oval abdomen, which secretes a caustic fluid. They live in societies, and when they are attacked or alarmed, they discharge this fluid, which not only makes a loud report, but diffuses a disagreeable and penetrating odor: if the liquid strikes the human skin, it produces a blister." &mdash; Goodrich, 1859

Bombadier Beetle

"The bombadier beetle has a large oval abdomen, which secretes a caustic fluid. They live in societies,…

"These congregate together under stones, and when disturbed discharge a caustic fluid of an extremely penetrating odor, and so volatile that no sooner does it come in contact with the atmosphere than it passes into a vapour, accompanied by a considerable explosion, during which they seek to escape. When placed on the tongue this guid causes a sharp pain and leaves a yellow spot somewhat similar to that produced by a drop of nitric acid. The Bombardiers are said to be capable of giving off as many as 18 of such discharges at a time." &mdash; Encyclopedia Britanica, 1893.

Bombardier Beetle

"These congregate together under stones, and when disturbed discharge a caustic fluid of an extremely…

"The Burying Beetles are prompted by their insect to bury any small animals or pieces of carrion as a provision for their young. In many cases several of them set to work together, getting under the animal to be buried, and digging the earth out with their feet." &mdash; Goodrich, 1859

Burying Beetles

"The Burying Beetles are prompted by their insect to bury any small animals or pieces of carrion as…

Nicrophorus germanicus, a larger species of necrophaga.

Burying Beetle

Nicrophorus germanicus, a larger species of necrophaga.

"The insects of this tribe, called <em>Capricorn Beetles</em> and distributed throughout most parts of the world, are generally distinguished by the great length of their entennae, these being usually considerably longer than the body." &mdash Goodrich, 1859

Capricorn Beetle

"The insects of this tribe, called Capricorn Beetles and distributed throughout most parts…

A carpet beetle in its pupal stage.

Carpet Beetle

A carpet beetle in its pupal stage.

A group of carnivorous beetles that mainly feed on snails.

Carrion Beetle

A group of carnivorous beetles that mainly feed on snails.

A group of carnivorous beetles that mainly feed on snails.

Carrion Beetle

A group of carnivorous beetles that mainly feed on snails.

Beetles form a large group of insects that number over 300,000 species. They all have hard wings which meet in the center of the back forming a line.

Caterpillar Hunter Beetles

Beetles form a large group of insects that number over 300,000 species. They all have hard wings which…

A species of beetle found in tropical Africa.

Centaur Beetle

A species of beetle found in tropical Africa.

"These insects are generally found in dark and dirty places about houses, in cellars, and similar situations." &mdash Goodrich, 1859

Churchyard Beetle

"These insects are generally found in dark and dirty places about houses, in cellars, and similar situations."…

Churchyard Beetle.

Churchyard Beetle

Churchyard Beetle.

"The <em>Elater striatus</em> of Caenne, is an inch long, of a black color, and striped upon the back." &mdash; Goodrich, 1859

Click Beetle

"The Elater striatus of Caenne, is an inch long, of a black color, and striped upon the back."…

"Springing Beetles, Elateridae, are narrower and more elongate than the former, and their legs are so short that when they fall on their backs they are as unable to right themselves as a capsized turtle, but by bending the head and thorax backwards, and making use of the prolongation already described, they are enabled to spring to a height fully ten times their own length, and this operation they repeat until they fall on their feet. The noise which accompanies the springing process has earned for them the name of Click Beetles." &mdash; Encyclopedia Britanica, 1893

Click Beetle

"Springing Beetles, Elateridae, are narrower and more elongate than the former, and their legs are so…

Also known as skipjacks. They are a beetle characterized by a click mechanism they possess, which they use to avoid predation.

Click Beetle

Also known as skipjacks. They are a beetle characterized by a click mechanism they possess, which they…

"The Colorado Beetle is a beetle first described by Thomas Say, in 1824, from specimens found by him near the Upper Missouri. The larva feeds greedily on the potato, and having attracted notice in Colorado for its ravages among the crops of that esculent in the territory, it moved eastward year by year, till in 1874 it had reached the Atlantic seaboard. It is popularly known as the potato bug."&mdash;(Charles Leonard-Stuart, 1911)

Colorado Beetle

"The Colorado Beetle is a beetle first described by Thomas Say, in 1824, from specimens found by him…

"The Colorado Beetle is a beetle first described by Thomas Say, in 1824, from specimens found by him near the Upper Missouri. The larva feeds greedily on the potato, and having attracted notice in Colorado for its ravages among the crops of that esculent in the territory, it moved eastward year by year, till in 1874 it had reached the Atlantic seaboard. It is popularly known as the potato bug."&mdash;(Charles Leonard-Stuart, 1911)

Colorado Beetle Eggs

"The Colorado Beetle is a beetle first described by Thomas Say, in 1824, from specimens found by him…

"The Colorado Beetle is a beetle first described by Thomas Say, in 1824, from specimens found by him near the Upper Missouri. The larva feeds greedily on the potato, and having attracted notice in Colorado for its ravages among the crops of that esculent in the territory, it moved eastward year by year, till in 1874 it had reached the Atlantic seaboard. It is popularly known as the potato bug."&mdash;(Charles Leonard-Stuart, 1911)

Colorado Beetle Larva

"The Colorado Beetle is a beetle first described by Thomas Say, in 1824, from specimens found by him…

The Colorado potato beetle (Leptinotarsa decemlineata), also known as the Colorado beetle, ten-striped spearman, the ten-lined potato beetle) is an important pest of potato crops. It is approximately 10 mm (0.4 inches) long, with a bright yellow/orange body and 5 bold brown stripes along the length of each of its elytra, and it can easily be confused with its close cousin and look-alike, the false potato beetle. The beetle was described in 1824 by Thomas Say from specimens collected in the Rocky Mountains on buffalo-bur, Solanum rostratum. The origin of the beetle is somewhat unclear, but it seems to be that Colorado and Mexico are a part of its native distribution in the southwestern North America

Colorado Potato Beetle

The Colorado potato beetle (Leptinotarsa decemlineata), also known as the Colorado beetle, ten-striped…

An adult common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

Adult Common Carpet Beetle

An adult common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

Larva of the common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

Common Carpet Beetle Larva

Larva of the common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

Larva of the common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

Common Carpet Beetle Larva

Larva of the common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

Pupa of the common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

Common Carpet Beetle Pupa

Pupa of the common carpet beetle, a small grayish or black beetle belonging to the order Coleoptera.

"Corn Beetle: a, larva, natural size; b, larva, magnified; c, perfect insect, natural dize; d, perfect insect, magnified." &mdash; Chambers' Encyclopedia, 1875

Corn Beetle

"Corn Beetle: a, larva, natural size; b, larva, magnified; c, perfect insect, natural dize; d, perfect…

Darkling beetles (also known as Darkening beetles) are a family of beetles found worldwide, estimated at more than 20,000 species. Many of the beetles have black elytra. Darkling beetles eat both fresh and decaying vegetation. Major predators include birds, rodents, sun spiders, and lizards.

Darkling Beetle

Darkling beetles (also known as Darkening beetles) are a family of beetles found worldwide, estimated…

"Even among the small species several of great beauty are to be met with, and few insects can boast of greater beauty than the well-known Diamond-beetle of Brazil, <em>Curculio imperialis</em>". &mdash Goodrich, 1859

Diamond Beetle

"Even among the small species several of great beauty are to be met with, and few insects can boast…

"A black insect, with brilliant metallic blue or purple reflections on the under side, and well known as "wheeling its drowsy flight" during fine evenings. This it does in search of a patch of cow-dung, through which it makes its way until reaching the ground, where it bores a perpendicular tunnel about 8 inches deep, and as wide as a man's finger; then ascending to the surface it conveys a quantity of dung to the bottom, and on this it proceeds to deposit an egg; another layer of the same material and another egg follow until the entire shaft is filled." &mdash; Encyclopedia Britanica, 1893

Dung Beetle

"A black insect, with brilliant metallic blue or purple reflections on the under side, and well known…

"A black insect, with brilliant metallic blue or purple reflections on the under side, and well known as "wheeling its drowsy flight" during fine evenings. This it does in search of a patch of cow-dung, through which it makes its way until reaching the ground, where it bores a perpendicular tunnel about 8 inches deep, and as wide as a man's finger; then ascending to the surface it conveys a quantity of dung to the bottom, and on this it proceeds to deposit an egg; another layer of the same material and another egg follow until the entire shaft is filled." &mdash; Encyclopedia Britanica, 1893

Dung Beetle

"A black insect, with brilliant metallic blue or purple reflections on the under side, and well known…

"A black insect, with brilliant metallic blue or purple reflections on the under side, and well known as "wheeling its drowsy flight" during fine evenings. This it does in search of a patch of cow-dung, through which it makes its way until reaching the ground, where it bores a perpendicular tunnel about 8 inches deep, and as wide as a man's finger; then ascending to the surface it conveys a quantity of dung to the bottom, and on this it proceeds to deposit an egg; another layer of the same material and another egg follow until the entire shaft is filled." &mdash; Encyclopedia Britanica, 1893

Dung Beetle

"A black insect, with brilliant metallic blue or purple reflections on the under side, and well known…

Elmis glaber is a species of beetle in the Elmidae family.

Elmis Beetle

Elmis glaber is a species of beetle in the Elmidae family.

Also known as Doryphora decemlineata. An enlarged view of the potato beetle.

Enlarged Potato Beetle

Also known as Doryphora decemlineata. An enlarged view of the potato beetle.

An illustration of a female blister beetle.

Female Blister Beetle

An illustration of a female blister beetle.