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There are approximately 2500 species of ants.

Ant

There are approximately 2500 species of ants.

Some ants are poisonous.

Ant

Some ants are poisonous.

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.

Antenna of crayfish, with auditory sac at base.

Antenna

Antenna of crayfish, with auditory sac at base.

Ant Lion adult.

Antlion

Ant Lion adult.

Aphids are tiny insects that are harmful to plants. This is an adult winged female.

Aphid

Aphids are tiny insects that are harmful to plants. This is an adult winged female.

Aphids are tiny insects that are harmful to plants. This is a wingless larval female.

Aphid

Aphids are tiny insects that are harmful to plants. This is a wingless larval female.

Numerous species of aphids, or plant lice, are known, and they are among the greatest pests of the gardener and farmer.

Aphid

Numerous species of aphids, or plant lice, are known, and they are among the greatest pests of the gardener…

auditory organ of a mollusk. a, auditory nerve; b, outer wall of connective tissue; c, cells with auditory hairs; d, otoliths

Auditory Organ

auditory organ of a mollusk. a, auditory nerve; b, outer wall of connective tissue; c, cells with auditory…

Grasshopper, showing auditory organ (a,o) in first segment of abdomen.

Auditory Organ

Grasshopper, showing auditory organ (a,o) in first segment of abdomen.

Cricket, showing auditory organ (a,o) in foreleg

Auditory Organ

Cricket, showing auditory organ (a,o) in foreleg

A male mosquito, showing auditory hairs (a.h.) on the antenna

Auditory Organ

A male mosquito, showing auditory hairs (a.h.) on the antenna

Bees form colonies in hives. There are different bees for different tasks.

Bee

Bees form colonies in hives. There are different bees for different tasks.

The honey-bee is of European origin, and has long been domesticated.

Honey Bee

The honey-bee is of European origin, and has long been domesticated.

The antenna of the honey-bee.

Honey Bee

The antenna of the honey-bee.

The mandible of the honey-bee.

Honey Bee

The mandible of the honey-bee.

The head of the honey-bee.

Honey Bee

The head of the honey-bee.

The prothorax of the honey-bee.

Honey Bee

The prothorax of the honey-bee.

The tongue of the honey-bee.

Honey Bee

The tongue of the honey-bee.

The mesothorax of the honey-bee.

Honey Bee

The mesothorax of the honey-bee.

The metathorax of the honey-bee.

Honey Bee

The metathorax of the honey-bee.

The abdomen of the honey-bee.

Honey Bee

The abdomen of the honey-bee.

The larva of the honey-bee.

Honey Bee

The larva of the honey-bee.

The pupa of the honey-bee.

Honey Bee

The pupa of the honey-bee.

The pupa of the honey-bee.

Honey Bee

The pupa of the honey-bee.

The worker or infertile female honey-bee.

Honey Bee

The worker or infertile female honey-bee.

The queen or fertile female honey-bee.

Honey Bee

The queen or fertile female honey-bee.

The cells of a bee hive. Note the large, irregular cells are queen cells.

Honey Bee

The cells of a bee hive. Note the large, irregular cells are queen cells.

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).

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…

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.

Lightning Spring Beetles

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

These beetles are brown and are often called June bugs.

May Beetle

These beetles are brown and are often called June bugs.

These beetles are brown and are often called June bugs.

May Beetle

These beetles are brown and are often called June bugs.

The prothorax of the May beetle.

May Beetle

The prothorax of the May beetle.

The mesothorax of the May beetle.

May Beetle

The mesothorax of the May beetle.

The metathorax of the May beetle.

May Beetle

The metathorax of the May beetle.

The abdomen of the May beetle.

May Beetle

The abdomen of the May beetle.

The metathorax of the May beetle from the front.

May Beetle

The metathorax of the May beetle from the front.

The May beetle larva in a burrow.

May Beetle

The May beetle larva in a burrow.

A pupa of the May beetle.

May Beetle

A pupa of the May beetle.

A pupa of the May beetle in cocoon.

May Beetle

A pupa of the May beetle in cocoon.

The grubs of the may beetle can be very destructive to turf.

May Beetle

The grubs of the may beetle can be very destructive to turf.

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.

Tiger Beetles

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

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.…

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

Tree Borer

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

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

Tree Borer

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

Unlike moths, butterflies have knobs at the tips of their antennae.

Butterfly

Unlike moths, butterflies have knobs at the tips of their antennae.

Unlike moths, butterflies have knobs at the tips of their antennae.

Butterfly

Unlike moths, butterflies have knobs at the tips of their antennae.

Butterflies are found throughout most of the world.

Butterfly

Butterflies are found throughout most of the world.

Butterflies may usually be distinguished by the vertical position of their wings when they are at rest, and by their having the antennae slender and club-shaped at the end.

Berenice Butterfly

Butterflies may usually be distinguished by the vertical position of their wings when they are at rest,…

The cabbage butterfly is one of the easiest of the butterflies to capture and rear, (Colton, 1903) This is a male.

Cabbage Butterfly

The cabbage butterfly is one of the easiest of the butterflies to capture and rear, (Colton, 1903) This…

The cabbage butterfly is one of the easiest of the butterflies to capture and rear, (Colton, 1903) This is a female.

Cabbage Butterfly

The cabbage butterfly is one of the easiest of the butterflies to capture and rear, (Colton, 1903) This…

The cabbage butterfly is one of the easiest of the butterflies to capture and rear, (Colton, 1903) This is a pupa.

Cabbage Butterfly

The cabbage butterfly is one of the easiest of the butterflies to capture and rear, (Colton, 1903) This…

Larva of a butterfly in caterpillar form.

Butterfly Larva

Larva of a butterfly in caterpillar form.

This common butterfly is of a brown color, with black veins and wing borders.

Monarch Butterfly

This common butterfly is of a brown color, with black veins and wing borders.

The larva of the monarch. This common butterfly is of a brown color, with black veins and wing borders.

Monarch Butterfly

The larva of the monarch. This common butterfly is of a brown color, with black veins and wing borders.

A hanging larva of the monarch. This common butterfly is of a brown color, with black veins and wing borders.

Monarch Butterfly

A hanging larva of the monarch. This common butterfly is of a brown color, with black veins and wing…

A hanging larva of the monarch. This common butterfly is of a brown color, with black veins and wing borders.

Monarch Butterfly

A hanging larva of the monarch. This common butterfly is of a brown color, with black veins and wing…

A hanging larva of the monarch. This common butterfly is of a brown color, with black veins and wing borders.

Monarch Butterfly

A hanging larva of the monarch. This common butterfly is of a brown color, with black veins and wing…

A pupa of the monarch. This common butterfly is of a brown color, with black veins and wing borders.

Monarch Butterfly

A pupa of the monarch. This common butterfly is of a brown color, with black veins and wing borders.