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

House Cricket

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

"Leaf of Venus's Fly-trap (Dionaea muscipula), closed over insect, viewed from the side." — The Encyclopedia Britannica, 1893

Venus Fly-trap

"Leaf of Venus's Fly-trap (Dionaea muscipula), closed over insect, viewed from the side." — The…

"Leaf of Venus's Fly-trap (Dionaea muscipula), closed over insect, viewed from above." — The Encyclopedia Britannica, 1893

Venus Fly-trap

"Leaf of Venus's Fly-trap (Dionaea muscipula), closed over insect, viewed from above." — The Encyclopedia…

"Sensitive glands of Dionaea muscipula, x 300." — The Encyclopedia Britannica, 1893

Venus Fly-trap

"Sensitive glands of Dionaea muscipula, x 300." — The Encyclopedia Britannica, 1893

"Male San Jose scale insect." —Davison, 1906

Scale Insect

"Male San Jose scale insect." —Davison, 1906

"The strawberry weevil in certain seasons has prevented the development of more than a half crop of berries in New Jersey, Delaware, Maryland, the Carolinas, and Virginia. The eggs are deposited in the flower buds, upon which the grublike larva feed and attain full size in about a month." —Davison, 1906

Strawberry Weevil

"The strawberry weevil in certain seasons has prevented the development of more than a half crop of…

"Probably no other insect has been the subject of so many and widespread legends and superstitions as the common "praying mantis," Mantis religiosa. The ancient Greeks endowed it with supernatural powers; the Turks and Arabs hold that it prays constantly with its face turned towards the mecca; the Provencals call it Prega-Diou; and numerous more or less similar names —preacher, saint, nun, medicant, soothsayer, etc., widely diffused throughout southern Europe. Children ask it to show them the way, and Mouffet assures us that it rarely or never deceives them; and it is even recorded that one specimen, which aligted on the hand of St. Francis Xavier, and which he commanded to sing the praise of God, loudly intoned a very beautiful canticle." —The Encyclopedia Britannica, 1903

Praying Mantis

"Probably no other insect has been the subject of so many and widespread legends and superstitions as…

Section through insect crust, showing layers of chitin at <em>c</em>, the cellular layer or hypodermis at <em>h</em>, and basal membrane at <em>b</em>.

Insect Crust

Section through insect crust, showing layers of chitin at c, the cellular layer or hypodermis…

Mouth parts of a mandibulate insect: different types of mandibles at a <em>a</em>, <em>b</em>, <em>c</em>, <em>d</em>, <em>e</em>; <em>f</em>, the labrum-epipharynx; <em>g</em>, <em>h</em>, types of maxillae; the cardo at <em>c</em>; stipes, <em>st</em>; subgalea, <em>sg</em>; galea as marked; palpus bearer, <em>pfr</em>; palpus at <em>mxp</em>; lacinia at <em>lac</em>; and digitus at <em>dig</em>; <em>i</em>, the labium with sub-mentum, <em>sm</em>, mantum, <em>m</em>, ligula, <em>lig</em>, paraglossa, <em>par</em>, and palpi.

Mandibles

Mouth parts of a mandibulate insect: different types of mandibles at a a, b, c,…

Head of Wasp to show regions: <em>a</em>, compound eyes; <em>b</em>, clypeus; <em>c</em>, labrum; <em>d</em>, mandibles; <em>e</em>, ocelli; <em>f</em>, place where antennae are inserted.

Head of Wasp

Head of Wasp to show regions: a, compound eyes; b, clypeus; c, labrum; d,…

A beetle, <em>Harpalus caliginosus</em>, from the under side, with all the pieces named.

Beetle

A beetle, Harpalus caliginosus, from the under side, with all the pieces named.

Ideal section through an insect. -<em>a</em>, alimentary canal; <em>h</em>, heart; <em>n</em>, nerve-cord; <em>s</em>, stigmata; <em>t</em>, tracheal tubes; <em>l</em>, legs; <em>w</em>, wings.

Transverse Thorax

Ideal section through an insect. -a, alimentary canal; h, heart; n, nerve-cord;…

One element in eye of roach

Sensory Organs of Insects

One element in eye of roach

Section of compound eye.

Sensory Organs of Insects

Section of compound eye.

Organs of smell in May-beetle

Sensory Organs of Insects

Organs of smell in May-beetle

Sense organs in abdominal appendages.

Sensory Organs of Insects

Sense organs in abdominal appendages.

Sensory ear

Sensory Organs of Insects

Sensory ear

Ear on foreleg of locust

Sensory Organs of Insects

Ear on foreleg of locust

Ear found on the basal segment of grasshopper abdomen.

Sensory Organs of Insects

Ear found on the basal segment of grasshopper abdomen.

Ovarian tubes of one side, in <em>Polistes</em>, showing eggs in all stages of development, with nutritive cells, <em>nm</em>, between; <em>rs</em>, seminal receptacle; <em>ov</em>, oviduct; <em>vag</em>, vagina

Sexual Organ of Insects

Ovarian tubes of one side, in Polistes, showing eggs in all stages of development, with nutritive…

Male organs of May-beetle. One side only beyond the ductus ejaculatoris, <em>duct</em>. <em>ejac</em>. ; <em>glm</em>., mucus glands; <em>ves</em>.<em>sem</em>., seminal vesicles; <em>vas</em>. <em>def</em>., vasa deferentia

Sexual Organ of Insects

Male organs of May-beetle. One side only beyond the ductus ejaculatoris, duct. ejac.…

Nymph ready to change

Molting of a Grasshopper

Nymph ready to change

The skin split along the back and the adult emerging.

Molting of a Grasshopper

The skin split along the back and the adult emerging.

The continuing of the process of the molting.

Molting of a Grasshopper

The continuing of the process of the molting.

The adult insect drying out.

Molting of a Grasshopper

The adult insect drying out.

A small, wingless insect. Its common name derives from the animals silver-gray color

Silverfish

A small, wingless insect. Its common name derives from the animals silver-gray color

A small, wingless insect. Its common name derives from the animals silver-gray color.

Springtail

A small, wingless insect. Its common name derives from the animals silver-gray color.

A tiny soft bodied, wingless insect that feeds on the mold in un-kept books.

Book Louse

A tiny soft bodied, wingless insect that feeds on the mold in un-kept books.

The larva of a spittle insect

Spittlebug

The larva of a spittle insect

The adult Spittle Insect

Spittlebug

The adult Spittle Insect

Pieris Vapae. An insect imported many years ago from Europe, and which has now spread over the largest part of the United States and Canada.

Cabbage Butterfly

Pieris Vapae. An insect imported many years ago from Europe, and which has now spread over the largest…

Pieris Vapae. An insect imported many years ago from Europe, and which has now spread over the largest part of the United States and Canada.

Cabbage Butterfly

Pieris Vapae. An insect imported many years ago from Europe, and which has now spread over the largest…

A brown and yellow insect.

Pickle Moth

A brown and yellow insect.

This insect derives its common name from the fact that it seems to prefer clustering in great numbers at the base of the horns of cattle, although it is really just as abundant on the flanks, pon the udder, and in other places where it cannot be readily reached by the animals.

Horn Fly

This insect derives its common name from the fact that it seems to prefer clustering in great numbers…

soft-bodied insects that devour wood as their main source of food.

Termite

soft-bodied insects that devour wood as their main source of food.

An African insect whose bite is deadly to livestock and animals.

Tsetse

An African insect whose bite is deadly to livestock and animals.

Otiocerus coquebertii, a small insect of a somewhat elongated form and having a small projection in front, resembling the lantern of the true fulgora or lantern fly of Surinam, but on a very diminutive scale; it feeds on the wild grape, beech, and oak; it is 0.35 to 0.45 in length, and of a yellowish-white color, with a bright carmine red stripe running longitudinally along each side of its wing, and which stripe is usually forked at its hinder end.

Planthopper

Otiocerus coquebertii, a small insect of a somewhat elongated form and having a small projection in…

A most singularly-formed insect; the front part of its head being much prolonged, and projecting upward like a thin curved horn.

Fulgora

A most singularly-formed insect; the front part of its head being much prolonged, and projecting upward…

A small homoterous insect, <em>Phylloscelis Atra</em> (var. <em>pallescens</em>) is not uncommon among the brambles and weeds in meadows in Maryland; it is one of a singular round or broad oval shape, being about 0.20 in length by 0.13 in breadth; the fore thigh are much thickened, and the hind tibiae or shanks are quite long and spiney on their outer edges, and are fitted for leaping. The color of this insect is black, having two orange-brown stripes on the thorax, two longitudinal stripes of the same color on the outer wings and on the border of their scutel.

Black Leaf-Leg

A small homoterous insect, Phylloscelis Atra (var. pallescens) is not uncommon among…

Eriosoma Lanigera, or the Wooly Apple-Tree Blight. These insects appropriate for their generic name two Greek words, signifying wool and body, the insect being partially enveloped in a cottony or wool-like secretion, furnished from its own body. The eggs are deposited in crotches or cracks of the branches or bark, often at or near the surface of the ground, or on new shoots springing from the parent tree.

Wooly Aphid

Eriosoma Lanigera, or the Wooly Apple-Tree Blight. These insects appropriate for their generic name…

Eriosoma Imbricata. Found very abundantly on birch in Maryland in October. These insects cluster together on the twigs, and have the appearance of many small spots of snow-like wool or down moving up and down by jerks, the hinder parts of the insect being covered with this downy secretion.

Wooly Aphid

Eriosoma Imbricata. Found very abundantly on birch in Maryland in October. These insects cluster together…

Scale-insect, was found on imported lemons in Jacksonville, Fla. This insect is said to be allied to <em>Aspidiotus</em> (<em>Coccus</em>) <em>citricola</em> of Boisduval, which has been very injurious to the orange in the maritime Alps in Northern Italy.

Aspidiotus Citricola

Scale-insect, was found on imported lemons in Jacksonville, Fla. This insect is said to be allied to…

The rear end of the machine is mounted upon two wheels. A trough, with a runner-like bow, containing some adhesive matter, is suspended upon each side of the row. A vibrating arm or beam, carrying wisps or brushes, is adjustably suspended form the farm, and as the machine is pushed along the row of plants the insects are shaken into the troughs, from which they are unable to escape.

Insect Sifter

The rear end of the machine is mounted upon two wheels. A trough, with a runner-like bow, containing…

The machine is supported upon two wheels, one in the rear of the other. The body is hopper shaped, with a pair of crushing-rollers at the bottom. At each side there are revolving-wings, which sweeps the insects into the hopper, and in addition to these there are two gathering-fingers, which support the vines during the passage of the machine.

Crushing Insect Sifter

The machine is supported upon two wheels, one in the rear of the other. The body is hopper shaped, with…

A type of ant that uses leaves to build its homes.

Umbrella Ant

A type of ant that uses leaves to build its homes.

Various forms of insect Antennae.

Antennae

Various forms of insect Antennae.

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the insect is hatched out the next spring, and feeds upon the sap of the tree. The first broods are all females, which in a short time, without any intercourse with the males, give birth to living young by the process of gemmation. These also produce other young ones, which are all females as long as the summer lasts, and it is only in the autumn that males are produced, which, uniting with the females, become the parents of the eggs for the following spring brood, thus bearing living young all the summer, and laying eggs which can withstand the frosts of the winter in autumn for the following spring season, while the parent insects in winter are destroyed by the wet and cold weather and alternate freezing and thawing.

Apple Plant Louse

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the…

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the insect is hatched out the next spring, and feeds upon the sap of the tree. The first broods are all females, which in a short time, without any intercourse with the males, give birth to living young by the process of gemmation. These also produce other young ones, which are all females as long as the summer lasts, and it is only in the autumn that males are produced, which, uniting with the females, become the parents of the eggs for the following spring brood, thus bearing living young all the summer, and laying eggs which can withstand the frosts of the winter in autumn for the following spring season, while the parent insects in winter are destroyed by the wet and cold weather and alternate freezing and thawing.

Apple Plant Louse

The females deposit their eggs, which are small, oval, and black, on twigs and bark in the autumn; the…

A grape-vine leaf gall-louse. The insect forms galls on the under side of the grape-vine leaves, and although they appear to do comparatively little injury to the vine, they are extremely interesting to vine-growers.

Fitch

A grape-vine leaf gall-louse. The insect forms galls on the under side of the grape-vine leaves, and…

Pediculus Pubis. The crab-louse is gray-black and is a much broader square form than the other two species of louse, that has been a great scourge to soliders in time of war. This insect has been named the crab-louse from its broad crab-like appearance. It is of grayish color; the head is small, and appears to be united with the broad body without any thorax; it inhabits the hairy part of the body, under the arms or shoulders, in the beard, etc., but appears to avoid the head. These insects pierce deeply into the skin of mankind, and produce an intolerable itching.

Crab Louse

Pediculus Pubis. The crab-louse is gray-black and is a much broader square form than the other two species…

The Tracheal tube of an insect, showing the structure and methods of branching.

Tracheal

The Tracheal tube of an insect, showing the structure and methods of branching.

Shows how air enters the spiracles into the respiratory system of an insect.

Spiracles

Shows how air enters the spiracles into the respiratory system of an insect.

A toothed slit of a spiracle of the respiratory system of an insect.

Spiracles

A toothed slit of a spiracle of the respiratory system of an insect.

A spiracle of the respiratory system of an insect.

Spiracles

A spiracle of the respiratory system of an insect.

Crossed hair section of a spiracle in the respiratory system of an insect.

Spiracles

Crossed hair section of a spiracle in the respiratory system of an insect.

A lip-like spiracle of the respiratory system of an insect.

Spiracles

A lip-like spiracle of the respiratory system of an insect.

An unprotected round spiracle of an insect's respiratory system.

Spiracles

An unprotected round spiracle of an insect's respiratory system.

An unprotected slit-like spiracle of an insect's respiratory system.

Spiracles

An unprotected slit-like spiracle of an insect's respiratory system.

An agrion insect.

Agrion

An agrion insect.

A Belostama Americana insect.

Giant Waterbug

A Belostama Americana insect.