"A genus of moths belonging to the family Zygænidæ, founded by clemens in 1862.They are small and delicate and of somber colors."-Whitney, 1902

Acoloithus

"A genus of moths belonging to the family Zygænidæ, founded by clemens in 1862.They are…

"a, larva within acron; b, acorn infested with the larva; c, head and thoracic segments of larva; d, one of the abdomincal segments of view; f, moth; g, basal joint antenna in the male moth."-Whitney, 1902

Acorn-moth

"a, larva within acron; b, acorn infested with the larva; c, head and thoracic segments of larva; d,…

"a, leaflets attacked by a larva of A. juglandis; b, case of larva; c, wings of A. nebulo; d, wings of A. juglandis; e, wings of A. nebulo var."-Whitney, 1902

Acrobasis

"a, leaflets attacked by a larva of A. juglandis; b, case of larva; c, wings of A. nebulo; d, wings…

"a, case containing caterpillar; b, cases in winter; c, head and thoracic joints of larva, enlarged; d, moth (the cross shows natural walnut case-bearer, feeds upon walnut and hickory, fastening the leaves together and skeletonizing them from base to tip."-Whitney, 1902

Acrobasis

"a, case containing caterpillar; b, cases in winter; c, head and thoracic joints of larva, enlarged;…

"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…

The larva is the stage right after the eggs are laid. In this stage, the larva is white and legless.

Red Wood Ant Larva

The larva is the stage right after the eggs are laid. In this stage, the larva is white and legless.

"Ant-lion; perfect larva."-Whitney, 1902

Antlion

"Ant-lion; perfect larva."-Whitney, 1902

"Ant-lion larva." — Chambers' Encyclopedia, 1875

Antlion

"Ant-lion larva." — Chambers' Encyclopedia, 1875

"Ant-lion perfect insect." — Chambers' Encyclopedia, 1875

Antlion

"Ant-lion perfect insect." — Chambers' Encyclopedia, 1875

"In some species the larvae, which are small, sluggish, oval-shaped creatures, and furnished with a formidable pair of jaws, excavate conical pits in the sandy places which they inhabit, at the bottom of which they conceal themselves entirely, with the exception of the head and jaws." — Goodrich, 1859

Antlion and Larva

"In some species the larvae, which are small, sluggish, oval-shaped creatures, and furnished with a…

An illustration a hop aphid in larval form. Aphids, also known as plant lice (and in Britain as greenflies), are small plant-eating insects, and members of the superfamily Aphidoidea. Aphids are among the most destructive insect pests on Earth.

Hop Aphid (Larva)

An illustration a hop aphid in larval form. Aphids, also known as plant lice (and in Britain as greenflies),…

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

"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec, Ectoderm; en, endoderm; mg, mesogloea; m, m, mesenteries; s, septum; b, basal plate formed of ellipsoids of carbonate of lime secreted by the basal ectoderm; ep, epitheca." — The Encyclopedia Britannica, 1910

Astroides Calicularis

"Tangential section of a larva of Astroides calicularis which has fixed itself on a piece of cork. ec,…

An illustration of the nauplius of a barnacle.

Nauplius of a Barnacle

An illustration of the nauplius of a barnacle.

"An egg, four larvae, and two pupae of the honey bee in their cells." —Davison, 1906

Bee Larva

"An egg, four larvae, and two pupae of the honey bee in their cells." —Davison, 1906

The larva of the honey-bee.

Honey Bee

The larva of the honey-bee.

The campodeiform larva of a ground beetle.

Beetle Larva

The campodeiform larva of a ground beetle.

"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 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."—(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…

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.

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

Corn Beetle

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

"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." — 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." — Encyclopedia Britanica, 1893

Dung Beetle

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

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 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.

"A, Dytiscus Marginalis, or great Water-beetle; B, larva." — Chambers' Encyclopedia, 1875

Great Diving Beetle

"A, Dytiscus Marginalis, or great Water-beetle; B, larva." — Chambers' Encyclopedia, 1875

"The <em>Dyticus marginalis</em>, a European species very common in ponds, attains a length of more than an inch." &mdash; Goodrich, 1859

Great Diving Beetle Adult and Larvae

"The Dyticus marginalis, a European species very common in ponds, attains a length of more…

"The <em>Dyticus marginalis</em>, a European species very common in ponds, attains a length of more than an inch." &mdash; Goodrich, 1859

Great Diving Beetle Female

"The Dyticus marginalis, a European species very common in ponds, attains a length of more…

"They are all of medium size, more or less oblong-oval in form, and mostly bronze-colored, rarely brown or black with a greenish tinge."-Whitney, 1902

Ground Beetle

"They are all of medium size, more or less oblong-oval in form, and mostly bronze-colored, rarely brown…

"The [potato beetle larva] is pale yellow, or, rather, dusky-yellow, or freckled with minute black dots on the back; and there are two rows of larger black dots along each side; the legs are black."&mdash;Nicholson, 1884

Larva of Potato Beetle

"The [potato beetle larva] is pale yellow, or, rather, dusky-yellow, or freckled with minute black dots…

"Elaphidion parallelum ... a, larva; b, twig split open, showing inclosed pupa; k, severed end of twig; c, beetle; i, basal joints of an antenna, showing the characteristic spines at the tip of the third and fourth joints; j, tip of elytron; d, e, f, g, h, head, maxilla, labium, mandible, and antenna of larva." -Whitney, 1911

Long-Horned Beetle

"Elaphidion parallelum ... a, larva; b, twig split open, showing inclosed pupa; k, severed end of twig;…

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

Longhorn Beetle Larva

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

The May beetle larva in a burrow.

May Beetle

The May beetle larva in a burrow.

"The Sternoxi include the Metallic Beetles, Buprestidae the most gorgeous of the coleopterous families. Some have a general coppery hue, whilst some present the beautiful contrast of fine yellow spots and marks upon a highly polished blue or green ground, and others exhibit the appearance of burnished gold or of rubies, inlaid on emerald of emony. The elytra of the Metallic Beetles are those usually employed in the embroidery of ladies' dresses and for other purposes of personal ornament. They are most plentiful in the thick forests of tropical countries, and seem partial to stage in the heart of timber." &mdash; Encyclopedia Britanica, 1893

Metallic Beetle Larva

"The Sternoxi include the Metallic Beetles, Buprestidae the most gorgeous of the coleopterous families.…

"Pine-bark beetle whose work has made pine lumber expensive; larva." &mdash;Davison, 1906

Pine Beetle

"Pine-bark beetle whose work has made pine lumber expensive; larva." —Davison, 1906

This illustration shows the destructive pine-bark beetle: a, adult beetle, enlarged; b, adult, natural size; c, pupa, enlarged; d, larva, enlarged; e, young larva, enlarged; f, egg, enlarged; g, larva, natural size.

Pine Beetle Stages

This illustration shows the destructive pine-bark beetle: a, adult beetle, enlarged; b, adult, natural…

"Subangular Ground-beetle (Aspidoglossa subangulata). Vertical line shows natural size."-Whitney, 1902

Subangular Ground Beetle

"Subangular Ground-beetle (Aspidoglossa subangulata). Vertical line shows natural size."-Whitney, 1902

Also known as crioceris asparagi. A-Beetle; B-Egg; C-Newly hatched larva; D-Full-grown larva; E-Pupa

The Life Cycle of the Asparagus Beetle

Also known as crioceris asparagi. A-Beetle; B-Egg; C-Newly hatched larva; D-Full-grown larva; E-Pupa

"The common European species, <em>Cincindela campestris</em>, may be found flying and running around with great agility in the hottest sunshine. The larvae are of a singular form; they live in holes in the ground, maintaining themselves by a pair of hooks places on the enlarged eighth segment of their body, at such a height that their heads exactly occupy the mouth of the hole." &mdash; Goodrich, 1859

Tiger Beetle and Larvae

"The common European species, Cincindela campestris, may be found flying and running around…

"The common European species, <em>Cincindela campestris</em>, may be found flying and running around with great agility in the hottest sunshine. The larvae are of a singular form; they live in holes in the ground, maintaining themselves by a pair of hooks places on the enlarged eighth segment of their body, at such a height that their heads exactly occupy the mouth of the hole." &mdash; Goodrich, 1859

Tiger Beetle Larve

"The common European species, Cincindela campestris, may be found flying and running around…

Water beetles carry air bubbles under their abdomens, which provides an air supply. Water beetle larvae dwell at the bottom of ponds.

Water Beetle Larva

Water beetles carry air bubbles under their abdomens, which provides an air supply. Water beetle larvae…

"The flatheaded borer, the larva." &mdash; Goff, 1904

Borer Insect

"The flatheaded borer, the larva." — Goff, 1904

"Peach tree borer, larva." &mdash;Davison, 1906

Peach Tree Borer

"Peach tree borer, larva." —Davison, 1906

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage. This is the larva.

Tree Borer

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.…

"Ox Botfly. a.-- larva, full grown, natural size; b,-- pupa; c.-- perfect insect. Botfly, Gadfly, and Warble-fly, names common to many insects of the family OEstridae, the genus OEstrus of Linnaeus." -Vaughan, 1906

Ox Botfly

"Ox Botfly. a.-- larva, full grown, natural size; b,-- pupa; c.-- perfect insect. Botfly, Gadfly, and…

Papilio Asterias, or Papilio Polyxenes. Bright green caterpillar with broken black bands.

Black Swallowtail Butterfly Larva

Papilio Asterias, or Papilio Polyxenes. Bright green caterpillar with broken black bands.

Pieris Protodice, a butterfly that becomes more common and assists its imported relative in making havoc among the cabbages, but this also may be easily controlled by the measures above detailed.

Checkered White Butterfly Larva and Chrysalis

Pieris Protodice, a butterfly that becomes more common and assists its imported relative in making havoc…

Also known as Pieris brassicae. An image of the larva and pupa of the large white cabbage butterfly.

Larva and Pupa of a Large White Cabbage Butterfly

Also known as Pieris brassicae. An image of the larva and pupa of the large white cabbage butterfly.

The larva or caterpillar of the butterfly.

Caterpillar

The larva or caterpillar of the butterfly.

"A, Cerianthus solitarius. B, Transverse section of the stomodaeum, showing the sulculus, sl, and the arrangement of the mesenteries. C, Oral aspect of Arachnactis brachiolata, the larva of Cerianthus, with seven tentacles. D, Transverse section of an older larva. The numerals indicate the order of development of the mesenteries." &mdash; The Encyclopedia Britannica, 1910

Cerianthus Solitarius

"A, Cerianthus solitarius. B, Transverse section of the stomodaeum, showing the sulculus, sl, and the…

An illustration of a full grown cockchafer larva. 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 iradicated 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. As they don't tolerate pollution well, their presence is usually a marker of low pollution levels.

Cockchafer Larva

An illustration of a full grown cockchafer larva. The cockchafer (colloquially called may bug, billy…

The larva of the colorado beetle is very unlike the adult insect. The larva is harmful to gardens.

Larva of the Colorado Beetle

The larva of the colorado beetle is very unlike the adult insect. The larva is harmful to gardens.

"Corn Fly (Chlorops taeniopus): a, a portion of a culm or stem of wheat with swollen joint, caused by larva of corn fly; b, larva; c, pupa; d, fly, natural size; c, fly, magnified." &mdash; Chambers' Encyclopedia, 1875

Corn Fly

"Corn Fly (Chlorops taeniopus): a, a portion of a culm or stem of wheat with swollen joint, caused by…

An illustration of a house cricket larva. Acheta domesticus (house cricket) is a cricket native to Europe. Both sexes of this grey or brown cricket are fully winged but can't fly. Originally from the Middle East and North Africa the insect is found in permanently heated buildings such as bakeries. Its shrill warbling song is heard mainly at night.

House Cricket Larva

An illustration of a house cricket larva. Acheta domesticus (house cricket) is a cricket native to Europe.…

"House Cricket (Gryllus domesticus): a, eggs; b, young just hatched; c, full-grown larva; d, pupa; e, perfect insect." &mdash; Chambers' Encyclopedia, 1875

House Cricket

"House Cricket (Gryllus domesticus): a, eggs; b, young just hatched; c, full-grown larva; d, pupa; e,…

An illustration of an earwig larva. Earwigs is the common name given to the insect order Dermaptera characterized by membranous wings folded underneath short leathery forewings (hence the literal name of the order&mdash;"skin wings"). The abdomen extends well beyond the wings, and frequently, though not always, ends in a pair of forceps-like structures termed cerci. The order is relatively small among Insecta, with about 1,800 recorded species in 10 families. Earwigs are, however, quite common globally. There is no evidence that they transmit disease or otherwise harm humans or other animals, despite their nickname pincher bug.

Earwig Larva

An illustration of an earwig larva. Earwigs is the common name given to the insect order Dermaptera…

"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,…