subphylum uniramia notes
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Subphylum Uniramia
The uniramians are characterized by having one pair of antennae.
Subphylum Uniramia
The uniramians are characterized by having one pair of antennae.
There are three classes….
Subphylum Uniramia
The uniramians are characterized by having one pair of antennae.
There are three classes….
1. Chilopoda – Centipedes
Subphylum Uniramia
The uniramians are characterized by having one pair of antennae.
There are three classes….
1. Chilopoda – Centipedes
2. Diplopoda – Millipedes
Subphylum Uniramia
The uniramians are characterized by having one pair of antennae.
There are three classes….
1. Chilopoda – Centipedes
2. Diplopoda – Millipedes
3. Insecta - Insects
Centipede literally means 100 legs. Since there are two legs per body segment, a centipede would have to have 50 segments in order to have 100 legs.
Centipedes have one pair of legs per body segment and the first pair is modified into poison claws.
House Centipede
Centipedes use their poison claws to inject venom into insects and other arthropods they eat.
Amazonian Yellow-legged Centipede
Some of the larger centipedes can be dangerous to people.
If you are ever attacked, you’ll need to get a firm grip closer to the poison claws at the anterior end.
Actually, the largest centipede species grows to eight inches.
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Millipedes’ first pair of legs are for walking. Unlike centipedes their first legs are not modified into poison claws.
Millipedes’ first pair of legs are for walking. Unlike centipedes their first legs are not modified into poison claws.
Millipedes scavenge plant materials such as fallen leaves and fruits.
The exoskeleton of millipedes is hard and protective. However, it does not cover the space between their rows of legs.
The exoskeleton of millipedes is hard and protective. However, it does not cover the space between their rows of legs.
To protect those vulnerable tissues, millipedes coil tightly to hide them.
The Class Diplopoda is divided into two orders, based on the shape of the millipede. One order consists of flattened millipedes, while the other includes those with a round body.
Pill Millipede
Millipede literally means “thousand legs”. None have 1000 legs, but several have over 600.
Each millipede segment, except the first three, bears two pairs of legs.
Insects have three body segments and three pairs of legs.
Why are insects so successful?
Why are insects so successful?
• When they evolved, there were mollusks and worms on land, but no other competition or predators.
Why are insects so successful?
• When they evolved, there were mollusks and worms on land, but no other competition or predators.
• Their exoskeleton gave them the support they needed to move about on land.
Why are insects so successful?
• When they evolved, there were mollusks and worms on land, but no other competition or predators.
• Their exoskeleton gave them the support they needed to move about on land.
• Land plants had already evolved so there was a great deal of “untapped” food resources for them.
Why are insects so successful?
• When they evolved, there were mollusks and worms on land, but no other competition or predators.
• Their exoskeleton gave them the support they needed to move about on land.
• Land plants had already evolved so there was a great deal of “untapped” food resources for them.
• With so much food, no competition, and no predators they had little selective
pressure against them.
Beetles’ front wings are shield-like. To fly, beetles must move their front wings to expose their flight wings.
Beetles’ front wings are shield-like. To fly, beetles must move their front wings to expose their flight wings.
Beetles outnumber all other insects in species diversity.
Major insect orders……
Major insect orders……
Major insect orders……
Major insect orders……
Major insect orders……
Major insect orders……
Coleoptera
Shield Wings
Diptera
Two-winged Flies
Hymenoptera
Membrane Wings
Isoptera
Same legs
Lepidoptera
Scale Wings
Hemiptera True Bugs
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