ClipArt ETC
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.

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

A larva of the Sphinx moth, displaying mimicry appearance so as to look aggressive.

Caterpillar

A larva of the Sphinx moth, displaying mimicry appearance so as to look aggressive.

A larva of a moth, displaying mimicry appearance so as to look aggressive.

Caterpillar

A larva of a moth, displaying mimicry appearance so as to look aggressive.

A larva of a moth, displaying mimicry appearance so as to look aggressive.

Caterpillar

A larva of a moth, displaying mimicry appearance so as to look aggressive.

Centipedes have from fifteen to twenty pair of legs.

Centipede

Centipedes have from fifteen to twenty pair of legs.

Horseshoe crabs represent an order called Xiphosura, from the fact that the end of the abdomen is furnished with a long sword-like spine.

Horseshoe Crab

Horseshoe crabs represent an order called Xiphosura, from the fact that the end of the abdomen is furnished…

Crabs are ten-footed crustaceans. The abdomen is tucked out of site, so that nothing is visible except the carapace.

Spider-Crab

Crabs are ten-footed crustaceans. The abdomen is tucked out of site, so that nothing is visible except…

The water flea known as Cypris.

Water Flea

The water flea known as Cypris.

The water flea known as Daphnia.

Water Flea

The water flea known as Daphnia.

The water flea known as Cyclops.

Water Flea

The water flea known as Cyclops.

This female parasitic wasp has a strong boring ovipositor for laying eggs in holes she drills in trees.

Ichneumon

This female parasitic wasp has a strong boring ovipositor for laying eggs in holes she drills in trees.

This female parasitic wasp has a strong boring ovipositor for laying eggs in holes she drills in trees.

Ichneumon

This female parasitic wasp has a strong boring ovipositor for laying eggs in holes she drills in trees.

The large Ichneumon fly with long flexible ovipositor.

Ichneumon

The large Ichneumon fly with long flexible ovipositor.

Common lobster. I. first pair of legs; 2 and 3. second and third pairs of legs; 4 and 5. last two pair of legs; a smaller antennae; ga greater antennae; ca carapace.

Lobster

Common lobster. I. first pair of legs; 2 and 3. second and third pairs of legs; 4 and 5. last two pair…

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up to protect their soft abdomens.

Wood Louse

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up…

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up to protect their soft abdomens.

Wood Louse

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up…

Millipedes have an indefinite number of legs.

Millipede

Millipedes have an indefinite number of legs.

Most mites live as external parasites sucking the blood of their host..

Mite

Most mites live as external parasites sucking the blood of their host..

The red scale of California is a parasitic insect that sucks sap from the plant it lives on.

Scale

The red scale of California is a parasitic insect that sucks sap from the plant it lives on.

An adult female scale

Scale

An adult female scale

The adult female scale forms a wax covering under which she remains.

Scale

The adult female scale forms a wax covering under which she remains.

The larvae of a scale

Scale

The larvae of a scale

An adult male scale

Scale

An adult male scale

Spider showing unusual shapes and patterns for purposes of camoflauge.

Spider

Spider showing unusual shapes and patterns for purposes of camoflauge.

Spider showing unusual shapes and patterns for purposes of camoflauge.

Spider

Spider showing unusual shapes and patterns for purposes of camoflauge.

A variety of invertebrates from the Tertiary age.

Tertiary Invertebrates

A variety of invertebrates from the Tertiary age.

Female wasps have stingers that they use to paralyze their prey.

Wasp

Female wasps have stingers that they use to paralyze their prey.