P. Arthropoda (ecdysozoa) Flashcards by Alexis Tang | Brainscape

Q

SP. Chelicerata

A

Characterized by:

First appendages are chelicerae (mouthparts)

Second appendages are pedipalps (pinchers or feelers)

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Q

SP. Crustacea / C. Crustacea

A

Crustaceans

2 pairs of antennae

Larva are nauplius

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Q

SP. Hexapoda / C. Insecta

A

Characterized by:

Mandibles for mouthparts

6 legs

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Q

C. Chilopoda

A

Centipedes

1 pair of legs per segment

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Q

C. Diplopoda

A

Millipedes

2 pairs of legs per segment

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Q

C. Merostomata

A

Horseshoe crabs

Pedipalps look like legs

Telson “tail,” book gills, carapace

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Q

C. Arachnida

A

Arachnids (scorpions, spiders, mites, ticks)

8 legs

Chelicerae are fangs

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Q

O. Opiliones

A

Harvestmen (daddy longlegs)

Females use ovipositor to lay eggs

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Q

O. Scorpiones

A

Scorpions

Pedipalps are pinchers

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Q

O. Aranaea

A

Spiders

2 segments: prosoma and opisthosoma

Spinnerets

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Q

O. Acari

A

Mites and ticks

Chelicerae fused into capitulum for piercing

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