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Organ of smell in wasp.

Sensory Organs

Organ of smell in wasp.

Sensory organs in Termes flavipes.

Sensory Organs

Sensory organs in Termes flavipes.

Organs of taste in a wasp.

Sensory Organs

Organs of taste in a wasp.

Organs of taste in a wasp.

Sensory Organs

Organs of taste in a wasp.

Organ of smell in grasshopper.

Sensory Organs

Organ of smell in grasshopper.

Sensory depressions on the tibia of Termes.

Sensory Organs

Sensory depressions on the tibia of Termes.

Terminal joint of antenna of an ant.

Sensory Organs

Terminal joint of antenna of an ant.

Section through the antenna of a honey-bee, showing supposed olfactory organs.

Sensory Organs

Section through the antenna of a honey-bee, showing supposed olfactory organs.

Aphelinus mytilaspidis, parasite on scale insects.

Aphelinus

Aphelinus mytilaspidis, parasite on scale insects.

Diagrams of sarcostyles of insects' wing muscles. A, relaxed; B, contracted.

Sarcostyles of Insect Wings

Diagrams of sarcostyles of insects' wing muscles. A, relaxed; B, contracted.

Grasshopper: an insect which uses its large hind legs to jump high.

Grasshopper

Grasshopper: an insect which uses its large hind legs to jump high.

"The snapdragon catch-fly, showing tiny insects caught upon the sticky band of the stems." -University Society, 1920

Snapdragon

"The snapdragon catch-fly, showing tiny insects caught upon the sticky band of the stems." -University…

"Ant guest or parasite (Atemeles) soliciting food from a worker Myrmica." -National Geographic, 1912

Ant Guest

"Ant guest or parasite (Atemeles) soliciting food from a worker Myrmica." -National Geographic, 1912

"Vertical cross-section of a Trilobite (Calymene). i., Intestine; s., shield; L., endopodite; e., exopodite; b., epipodial parts." -Thomson, 1916

Trilobite

"Vertical cross-section of a Trilobite (Calymene). i., Intestine; s., shield; L., endopodite; e., exopodite;…

" A genus of insessorial birds many of which are remarkable for the beauty of their plumage. They have a longish bill, an extensible tongue, and feed upon insects, soft fruits, and the saccharine juices of plants." -Marshall

Promerops Superba Bird

" A genus of insessorial birds many of which are remarkable for the beauty of their plumage. They have…

A group of insects belonging to the order Hymenoptera, and distinguished by the peculiar confirmation of the ovipositor of the females, which is composed of two broad plates, with serrated or toothed edges.

Saw Fly Hovering Above a Plant

A group of insects belonging to the order Hymenoptera, and distinguished by the peculiar confirmation…

An extensive genus of coleopterous insects tribes, and answering to the section Lamellicornes of Latereille. They are sometimes called dung-beetles, from their habit of enclosing their eggs in pellet of dung, which are placed in holes excavated for their reception.

Sacred Beetle

An extensive genus of coleopterous insects tribes, and answering to the section Lamellicornes of Latereille.…

Insects have neither arteries nor veins. The circulation, such as it is, is animated by the action of a vessel called dorsal, which is situated above the digestive tube. Labels: 1, Dorsal vessels in which the blood flows. 2,The lateral currents. The arrows show the outward and the inward current.

Diagram of the Circulation of an Insect.

Insects have neither arteries nor veins. The circulation, such as it is, is animated by the action of…

The nervous system of insects is composed primarily of a double series of ganglions united by longitudinal cords. Shown is a diagram of the nervous system of a beetle. Labels: 1, Central ganglia. 2, Nerves that connect the ganglions.

Diagram of Nervous System of a Beetle

The nervous system of insects is composed primarily of a double series of ganglions united by longitudinal…

"Its size is about twenty inches. They feed almost exclusively on insects, but attack frogs, mice, etc., and destroy the eggs of the partridge."

Ocellated Lizard

"Its size is about twenty inches. They feed almost exclusively on insects, but attack frogs, mice, etc.,…

"The lapwing is a most useful bird to man; it destroys a prodigious quantity of worms, caterpillars and noxious insects."

Lapwing

"The lapwing is a most useful bird to man; it destroys a prodigious quantity of worms, caterpillars…

"Sometimes one may observe eight of ten on the wing together in the dusk of evening in pursuit of insects."

Flag Night-Jar

"Sometimes one may observe eight of ten on the wing together in the dusk of evening in pursuit of insects."

"The compound are composed of many lenses, forming hexagonal facettes. The exterior of the eye is called the cornea."

A Compound Cornea

"The compound are composed of many lenses, forming hexagonal facettes. The exterior of the eye is called…

"Everything indicates that these organs play a very important part in the life of insects."

Antenna of a Species of Asida

"Everything indicates that these organs play a very important part in the life of insects."

"The thorax, the second primary division of the body of insects, plays almost as important a part as the head."

Thorax of Acrocinus Longimanus

"The thorax, the second primary division of the body of insects, plays almost as important a part as…

"Everything indicates that these organs play a very important part in the life of insects."

Antenna of Zygia Oblonga

"Everything indicates that these organs play a very important part in the life of insects."

"The mouth of a biting insect is composed of an upper lip, a pair of mandibles, a pair of jaws, and a lower lip."

Mouth of Masticating Insect

"The mouth of a biting insect is composed of an upper lip, a pair of mandibles, a pair of jaws, and…

A close-up of the hind leg of a Heterocerus.

Hind Leg of a Heterocerus

A close-up of the hind leg of a Heterocerus.

"The front leg of a genera of beetles."

Front Leg of a Zophosis

"The front leg of a genera of beetles."

Jumping insects have very developed hind legs.

Posterior Leg of a Jumping Insect

Jumping insects have very developed hind legs.

"Digestive apparatus of the common beetle." A: Mouth B: Esophagus C: Crop D: Gizzard E: Chylific entricle F: Small intestine G: Large intestine H: Anus

Digestive Apparatus of Carabus Auratus

"Digestive apparatus of the common beetle." A: Mouth B: Esophagus C: Crop D: Gizzard E: Chylific entricle…

Shows "the manner in which the tubes enter the chylific ventricle."

Posterior Extremity of the Chylific Ventricle, Surrounded by the Malpighian Vessels

Shows "the manner in which the tubes enter the chylific ventricle."

A: Abdominal portion of the dorsal vessel B: Aortic or thoracic portion C: Air-vessels of the head D: Air-vessels of the abdomen

Organs of Circulation and Breathing in an Insect

A: Abdominal portion of the dorsal vessel B: Aortic or thoracic portion C: Air-vessels of the head D:…

A: Foliaceous laminae, or gills "The breathing apparatus of a water insect called the Ephemera."

Branchiae, or Gills, of an Aquatic Larva (Ephemera)

A: Foliaceous laminae, or gills "The breathing apparatus of a water insect called the Ephemera."

A: Cephalic ganglion B: Sub-esophagean ganglion C: Prothoracic ganglion D: Mesothorax ganglion E: Metathorax ganglion F: Abdominal ganglions

Nervous System of Carabus Auratus

A: Cephalic ganglion B: Sub-esophagean ganglion C: Prothoracic ganglion D: Mesothorax ganglion E: Metathorax…

A: Eggs B: Larva C: Pupa D: Imago, or perfect insect

Hydrophilus in its Four States

A: Eggs B: Larva C: Pupa D: Imago, or perfect insect

"The common Flea has an oval body, somewhat flattened, and covered with a rather horay skin."

Flea (Pulex Irritans)

"The common Flea has an oval body, somewhat flattened, and covered with a rather horay skin."

"The Head-louse is an insect with a flat body, slightly transparent, and of a grayish color."

Louse (Pediculus Capitis)

"The Head-louse is an insect with a flat body, slightly transparent, and of a grayish color."

This insect has a natural camouflage and appears just a leaf.

Leaf Insect (Phyllium Scythe), Female

This insect has a natural camouflage and appears just a leaf.

Gnats are a member of the <em>Culicidae</em> family. "They present a charming appearance when seen through a microscope."

The Gnat (Culex Pipiens)

Gnats are a member of the Culicidae family. "They present a charming appearance when seen through…

Gnats are a member of the <em>Culicidae</em> family. "They present a charming appearance when seen through a microscope."

The Gnat (Culex Pipiens)

Gnats are a member of the Culicidae family. "They present a charming appearance when seen through…

"The antennae of the male have a fine feathery appearance."

Magnified Antennae of Gnat

"The antennae of the male have a fine feathery appearance."

"The head of the gnat with its two eyes, its antennae and trunk. Their eyes, covered with network, are so large that they cover nearly the whole head."

Magnified Head of Gnat

"The head of the gnat with its two eyes, its antennae and trunk. Their eyes, covered with network, are…

"That which is generally seen is only the case containing the instruments which are intended to pierce our skin and suck our blood."

Magnified Trunk of Gnat

"That which is generally seen is only the case containing the instruments which are intended to pierce…

"The gnat's sting is a sort of a sword in miniature. These have their points reversed, and are serrated on the convex side of the bend."

Lancets of the Gnat

"The gnat's sting is a sort of a sword in miniature. These have their points reversed, and are serrated…

"Many have observed in stagnant water, a number of worm-like bodies. These are gnats in the larvae period."

Larva of the Gnat

"Many have observed in stagnant water, a number of worm-like bodies. These are gnats in the larvae period."

In the pupa state, there is no digestive system, but it does have respiration organs.

Pupa of the Gnat

In the pupa state, there is no digestive system, but it does have respiration organs.

Illustration of the different stages of a gnats life.

Gnats Emerging

Illustration of the different stages of a gnats life.

"The number of gnats which come into existence in the course of a year is marvelous."

Magnified Eggs of the Gnat

"The number of gnats which come into existence in the course of a year is marvelous."

"Sometimes these insects destroy grass; they often injure the harvest."

Daddy Long Legs (Tipula Oleracea)

"Sometimes these insects destroy grass; they often injure the harvest."

"The Tabanus Autumnalis is a common species, eight or nine lines in length, or a blackish color."

Tabanus Autumnalis

"The Tabanus Autumnalis is a common species, eight or nine lines in length, or a blackish color."

"Chrysops Caecutiens torment horses and cattle very much by biting them around the eyes."

Chrysops Caecutiens

"Chrysops Caecutiens torment horses and cattle very much by biting them around the eyes."

"This species is common over the whole of Europe, and lives at the expense of caterpillars and other insects, of which it sucks the blood with the greatest voracity."

Asilus Crabroniformis

"This species is common over the whole of Europe, and lives at the expense of caterpillars and other…

"The Bombylidae may be recognized by the elegant fur which covers their bodies."

Bombylius Major

"The Bombylidae may be recognized by the elegant fur which covers their bodies."

"The larva makes a small tunnel in the sand, having a conical mouth, where it waits, like the spider, immovable. As soon as an insect falls into the hole, it raises its head, and squeezing its prey in the folds of its body, devours it."

Vermilea de Geeri

"The larva makes a small tunnel in the sand, having a conical mouth, where it waits, like the spider,…

Because they resemble the humblebee, they introduce their eggs into humblebee nests. When the larvae hatch, they devour the larvae of their hosts.

A Species of Volucella

Because they resemble the humblebee, they introduce their eggs into humblebee nests. When the larvae…

"In England they are known as rat-tailed maggots, and their habits are aquatic."

Species of Helophilus

"In England they are known as rat-tailed maggots, and their habits are aquatic."

The tail of these worms will grow as the depth of water is increased to accommodate breathing.

Larvae of Helophilus

The tail of these worms will grow as the depth of water is increased to accommodate breathing.

"During the months of July and August, the Estrus frequents pastures, and deposits its eggs on the shoulders, knees, etc., of horses."

Male Horse-Fly, Estrus (Gasterophilus) Equi

"During the months of July and August, the Estrus frequents pastures, and deposits its eggs on the shoulders,…

"During the months of July and August, the Estrus frequents pastures, and deposits its eggs on the shoulders, knees, etc., of horses."

Female Horse-Fly, Estrus (Gasterophilus) Equi

"During the months of July and August, the Estrus frequents pastures, and deposits its eggs on the shoulders,…