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Bedbug.

Bedbug

Bedbug.

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…

An illustration of a beetle fossil.

Beetle Fossil

An illustration of a beetle fossil.

The campodeiform larva of a ground beetle.

Beetle Larva

The campodeiform larva of a ground beetle.

A bark beetle is one of approximately 220 genera with 6,000 species of beetles in the subfamily Scolytinae. Traditionally this was considered a distinct family Scolytidae, but nowadays it is understood that bark beetles are in fact very specialized members of the "true weevil" family (Curculionidae).

Bark Beetle

A bark beetle is one of approximately 220 genera with 6,000 species of beetles in the subfamily Scolytinae.…

Epicauta pardalis is a species of blister beetle in the Meloidae family.

Blister Beetle

Epicauta pardalis is a species of blister beetle in the Meloidae family.

Epicauta maculata is a species of blister beetle in the Meloidae family.

Blister Beetle

Epicauta maculata is a species of blister beetle in the Meloidae family.

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…

"Carrion-beetle (Silpha inaequalis). a, larva; d, same; f, g, h, mandible, labium, and maxilla of larva; i, j, anal process and antenna of same; m, one of the lateral processes. b, pupa; e, same; l, anal process of same. c, beetle; k, anterior tarsus of same." -Whitney, 1911

Carrion Beetle

"Carrion-beetle (Silpha inaequalis). a, larva; d, same; f, g, h, mandible, labium, and maxilla of larva;…

The family Elateridae is commony called click beetles (or "typical click beetles" to distinguish them form the related Cerophytidae and Eucnemidae), elaters, snapping beetles, spring beetles or "skipjacks". They are a cosmopolitan beetle family characterized by the unusual click mechanism they possess. There are a few closely-related families in which a few members have the same mechanism, but all elaterids can click. A spine on the prosternum can be snapped into a corresponding notch on the mesosternum, producing a violent "click" which can bounce the beetle into the air. Clicking is mainly used to avoid predation, although it is also useful when the beetle is on its back and needs to right itself. There are about 7000 known species.

Click Beetle

The family Elateridae is commony called click beetles (or "typical click beetles" to distinguish them…

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…

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…

The adult of Dytiscus fasciventris, a species of predacious diving beetles.

Diving Beetle

The adult of Dytiscus fasciventris, a species of predacious diving beetles.

The pupa of Dytiscus marginalis, the Great Diving Beetle.

Great Diving Beetle

The pupa of Dytiscus marginalis, the Great Diving Beetle.

The dung beetle is an insect in the Scarabaeidae family and was a sacred icon to the Egyptians.

Dung Beetle

The dung beetle is an insect in the Scarabaeidae family and was a sacred icon to the Egyptians.

"Under Surface of Head of Tumble-bug (Copris carolina), about four times natural size. 1, galea; 2, palpifer; 3, lacinia; 4, subgalea; 5, maxillary palp; 6, stipes." -Whitney, 1911

Ventral View of Dung Beetle

"Under Surface of Head of Tumble-bug (Copris carolina), about four times natural size. 1, galea; 2,…

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

Elmis Beetle

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

An illustration of a female blister beetle.

Female Blister Beetle

An illustration of a female blister beetle.

The Grapevine Flea Beetle (Altica chalybea). "a, leaf infested with larvae; b, larva; c, cocoon; d, beetle." -Whitney, 1911

Grapevine Flea Beetle

The Grapevine Flea Beetle (Altica chalybea). "a, leaf infested with larvae; b, larva; c, cocoon; d,…

The Handsome Fungus Beetle (Endomychus biguttatus) is an insect in the Cucujoidea superfamily of beetles.

Handsome Fungus Beetle

The Handsome Fungus Beetle (Endomychus biguttatus) is an insect in the Cucujoidea superfamily of beetles.

The larva of Erotylus boisduvali, a fungus beetle.

Fungus Beetle Larva

The larva of Erotylus boisduvali, a fungus beetle.

The larva of Erotylus boisduvali, a fungus beetle.

Fungus Beetle Larva

The larva of Erotylus boisduvali, a fungus beetle.

The ventral and dorsal view of the pupa of Erotylus boisduvali, a fungus beetle.

Fungus Beetle Pupa

The ventral and dorsal view of the pupa of Erotylus boisduvali, a fungus beetle.

Erotylus boisduvali, a fungus beetle. "e, beetle; f, palpus; g, tarsus, from below; h, terminal joint of tarsus, from above; i, antenna." -Whitney, 1911

Fungus Beetle

Erotylus boisduvali, a fungus beetle. "e, beetle; f, palpus; g, tarsus, from below; h, terminal joint…

The Goliath beetles are among the largest insects on Earth, if measured in terms of size, bulk and weight. They are members of subfamily Cetoniinae, within the scarab beetle family. Goliath beetles can be found in many of Africa's tropical forests, where they feed primarily on tree sap and fruit. Little appears to be known of the larval cycle in the wild, but in captivity, Goliathus beetles have been successfully reared from egg to adult using protein-rich foods such as commercial cat and dog food. Goliath beetles measure from 60–110 millimetres (2.4–4.3 in) for males and 50–80 millimetres (2.0–3.1 in) for females, as adults, and can reach weights of up to 80–100 grams (2.8–3.5 oz) in the larval stage, though the adults are only about half this weight. The females range from a dark brown to silky white, but the males are nomally brown/white/black or black/white.

Goliath Beetle

The Goliath beetles are among the largest insects on Earth, if measured in terms of size, bulk and weight.…

The Saw-Toothed Grain Beetle (Oryzaephilus surinamensis) is a beetle of the Silvanidae family and is named after the saw teeth on the sides of its prothorax.

Saw-Toothed Grain Beetle

The Saw-Toothed Grain Beetle (Oryzaephilus surinamensis) is a beetle of the Silvanidae family and is…

Ground beetles or carabids are collective terms for the beetle family Carabidae. This is a large family, with more than 40,000 species worldwide, approximately 2,000 of which are found in North America and 2,700 in Europe.

Ground Beetle

Ground beetles or carabids are collective terms for the beetle family Carabidae. This is a large family,…

Ega sallei is a species of insect in the Carabidae family of ground beetles.

Ground Beetle

Ega sallei is a species of insect in the Carabidae family of ground beetles.

Elaphrus riparius is a species of Ground Beetle in the Carabidae family.

Ground Beetle

Elaphrus riparius is a species of Ground Beetle in the Carabidae family.

The dorsal view of the Ground Beetle (Evarthrus orbatus), an insect in the Carabidae family of carabid beetles.

Dorsal View of Ground Beetle

The dorsal view of the Ground Beetle (Evarthrus orbatus), an insect in the Carabidae family of carabid…

The Hercules beetle (Dynastes hercules) is the most famous of the rhinoceros beetles. Native to the rain forests of Central and South America, they also can be found in coastal regions of North Carolina, their title is well deserved, with some (exceptionally rare) males reaching 6.75 inches (170 mm) in length. It is the largest of the 6 species in the Dynastes genus, and one of the largest beetles known.

Hercules Beetle

The Hercules beetle (Dynastes hercules) is the most famous of the rhinoceros beetles. Native to the…

The Ivory-Marked Beetle (Eburia quadrigeminata) is an insect in the Cerambycidae family of longhorn beetles.

Ivory-Marked Beetle

The Ivory-Marked Beetle (Eburia quadrigeminata) is an insect in the Cerambycidae family of longhorn…

Galeruca notata is a beetle species in the Chrysomelidae family of leaf beetles.

Dorsal View of Leaf Beetle

Galeruca notata is a beetle species in the Chrysomelidae family of leaf beetles.

The longhorn beetles (Cerambycidae; also known as long-horned beetles or, more archaically, llongicorns) are a cosmopolitan family of beetles, typically characterized by extremely long antennae, which are often as long as or longer than the beetle's body. The family is large, with over 20,000 species described, slightly more than half from the Eastern Hemisphere. Several are serious pests, with the larvae boring into wood, where they can cause extensive damage to either living trees or untreated lumber.

Longhorn Beetle

The longhorn beetles (Cerambycidae; also known as long-horned beetles or, more archaically, llongicorns)…

The larva stage of the longhorn beetle (Saperda candida).

Longhorn Beetle Larva

The larva stage of the longhorn beetle (Saperda candida).

The pupa stage of the longhorn beetle (Saperda candida).

Longhorn Beetle Pupa

The pupa stage of the longhorn beetle (Saperda candida).

The adult stage of the longhorn beetle (Saperda candida).

Longhorn Beetle

The adult stage of the longhorn beetle (Saperda candida).

"a, first or trungulin larva ( line shows natural size)." - Century, 1889

Male Blister Beetle

"a, first or trungulin larva ( line shows natural size)." - Century, 1889

Mealworms are the larva form of the mealworm beetle, Tenebrio molitor, a species of darkling beetle. Like all holometabolic insects, they go through four life-stages: egg, larva, pupa, and adult. Larvae typically measure about 2.5 cm or more, whereas adults are generally between 1.25 and 1.8 cm in length.

Mealworm Beetle

Mealworms are the larva form of the mealworm beetle, Tenebrio molitor, a species of darkling beetle.…

Predaceous diving beetles is a family of water beetles. They are about 25 mm (one inch) long on average, though there is much variation between species. Dytiscus latissimus, the largest, can grow up to 45 mm long. Most are dark brown, blackish or dark olive in color with golden highlights in some subfamilies. They have short, but sharp mandibles. Immediately upon biting they deliver digestive enzymes. The larvae are commonly known as water tigers. The family has not been comprehensively cataloged since 1920, but is estimated to include about 4,000 species in over 160 genera.

Predaceous Beetle

Predaceous diving beetles is a family of water beetles. They are about 25 mm (one inch) long on average,…

Predaceous diving beetles is a family of water beetles. They are about 25 mm (one inch) long on average, though there is much variation between species. Dytiscus latissimus, the largest, can grow up to 45 mm long. Most are dark brown, blackish or dark olive in color with golden highlights in some subfamilies. They have short, but sharp mandibles. Immediately upon biting they deliver digestive enzymes. The larvae are commonly known as water tigers. The family has not been comprehensively cataloged since 1920, but is estimated to include about 4,000 species in over 160 genera.

Predaceous Beetle

Predaceous diving beetles is a family of water beetles. They are about 25 mm (one inch) long on average,…

The Grape Rootworm Beetle (Fidia viticida) is an insect in the Chrysomelidae family of leaf beetles.

Grape Rootworm Beetle

The Grape Rootworm Beetle (Fidia viticida) is an insect in the Chrysomelidae family of leaf beetles.

"1. A serricorn beetle (an elater). 2, 3. Englarged antennae of other serricorns (species of Phyllocerus and Pachyderes)." -Whitney, 1911

Serricorn Beetle

"1. A serricorn beetle (an elater). 2, 3. Englarged antennae of other serricorns (species of Phyllocerus…

An illustration of the dorsal view of a stag beetle.

Stag Beetle (Dorsal)

An illustration of the dorsal view of a stag beetle.

An illustration of the under of a stag beetle.

Beetle, Stag (Ventral)

An illustration of the under of a stag beetle.

The tiger beetles are a large group of beetles known for their predatory habits. Some tiger beetles can run at a speed of 5 mph. For its size it has been suggested that they are technically the fastest running land animals. This has been featured on "Animal Planet's Most Extreme" show as the number one fastest animal known to man on earth.

Tiger Beetle

The tiger beetles are a large group of beetles known for their predatory habits. Some tiger beetles…

An illustration of a wood-boring beetle

Wood-boring Beetle

An illustration of a wood-boring beetle

Gyascutus planicosta is a species of Metallic Wood-Boring Beetles in the Buprestidae family.

Metallic Wood-Boring Beetle

Gyascutus planicosta is a species of Metallic Wood-Boring Beetles in the Buprestidae family.

The term woodboring beetle encompasses many species and families of beetles whose larval or adult forms eat and destroy wood (i.e., are xylophagous). Larval stages of some are commonly known as woodworms.

Woodboring Beetle

The term woodboring beetle encompasses many species and families of beetles whose larval or adult forms…

An illustration of a wood-boring beetle known as an apple tree borer.

Apple Tree Borer

An illustration of a wood-boring beetle known as an apple tree borer.

Cast-off nymphal skin of bed-bug.

Bedbug

Cast-off nymphal skin of bed-bug.

"Geopinus incrassatus. GEOPINUS. A genus of caraboid beetles, of the subfamily Harpalinae, having the left mandible longer than the other and overlapping it." -Whitney, 1911

Caraboid Beetle

"Geopinus incrassatus. GEOPINUS. A genus of caraboid beetles, of the subfamily Harpalinae, having the…

An illustration of a cetonia baxii beetle.

Cetonia Baxii

An illustration of a cetonia baxii beetle.

An illustration of a cladognathus cinnamomeus beetle.

Cladognathus Cinnamomeus

An illustration of a cladognathus cinnamomeus beetle.

The cockchafer (colloquially called may bug, billy witch, or spang beetle, particularly in East Anglia) is a European beetle of the genus Melolontha, in the family Scarabaeidae. Once abundant throughout Europe and a major pest in the periodical years of "mass flight", it had been nearly eradicated in the middle of the 20th century through extensive use of pesticides and has even been locally exterminated in many regions. However, since a change in pest control beginning in the 1980s, its numbers have started to grow again.

Cockchafer

The cockchafer (colloquially called may bug, billy witch, or spang beetle, particularly in East Anglia)…

"Rose-curculio (Rhynchites bicolor). a, beetle; c, same in profile; b, claw." -Whitney, 1911

Rose Curculio

"Rose-curculio (Rhynchites bicolor). a, beetle; c, same in profile; b, claw." -Whitney, 1911

"Drone-beetle (Geotrypes splendidus). GEOTRYPES. A Fabrician genus of beetles typical of the family Geotrypidae." -Whitney, 1911

Drone Beetle

"Drone-beetle (Geotrypes splendidus). GEOTRYPES. A Fabrician genus of beetles typical of the family…

An illustration of a endomychus coccineus, often mistaken for a ladybug.

Endomychus Coccineus

An illustration of a endomychus coccineus, often mistaken for a ladybug.

An illustration of a eumorphus ivguttatus beetle.

Eumorphus Ivguttatus

An illustration of a eumorphus ivguttatus beetle.

"Common Firefly (Photinus pyralis). a, larva; b, pupa in its earthen cell; c, beetle. d, e, f, leg, under side of segment, and head of larva." -Whitney, 1911

Common Eastern Firefly

"Common Firefly (Photinus pyralis). a, larva; b, pupa in its earthen cell; c, beetle. d, e, f, leg,…