Centipedes and millipedes, body: head and a long repeating trunk, one pair of antennae, many uniramous limbs on a trunk, terrestrial, young resemble adults, moult to grow
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Millipede
2 Pairs of legs per segment, not carnivorous, not dangerous but can smell
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Centipede
1 pari of legs per segment, carnivorous, can be dangerous
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Chelicerata (sub-phylum)
'Talon horned', body divided into cephalothorax & abdomen, no antennae, 2 pairs of appendages on anterior cephalothorax (chelicerae and pedipalps), 4 pairs of uniramous walking legs
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Horseshoe crabs
Dorsal carapace (shell on back), pointed tail, marine, eat molluscs &annelids, mate at high tide, full moon on beach edge, eggs &larvae food for birds, blood cells very sensitive indicator of bacteria
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Arachnida
8 legs, terrestrial, spiders, scorpions, harvest men, mites and ticks
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Spiders
(Class: Araneae) Spherical abdomen, chelicerae with poison glands, pedipalps for sensory and handling, book lungs/ trachea, silk, active or passive predators
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Describe how spiders eat their prey
Rapidly immobilise prey, digestion start outside body with toxins, ingests liquid (stomach acting as a pump)
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Scorpions
(Order: Scorpiones) Chelicerae short and powerful, pedipalps have large claws, tail has stinging poison gland, book lungs, pectines, active predators
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What are pectines?
Feather-like structures on the under-belly of scorpion, they are sensory appendages, thousands of chemosensors in them
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Harvestmen
(Order: Opiliones) Long legs, not venomous but carnivorous, some smell if threatened
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Mites and ticks
(Order: Acarina) Wide junction between cephalothorax & abdomen, almost all are small, some carnivorous, some herbivores, includes human parasites and disease vectors
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Other cards in this set
Card 2
Front
Millipede
Back
2 Pairs of legs per segment, not carnivorous, not dangerous but can smell
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