Phylum Arthropoda

Front 1

What are the three subphyla within the Arthopoda?

Back 1

Subphylum Trilobita
Subphylum Chelicerata
Subphylum Mandibulata

Front 2

What are the three classes of Chelicerates?

Back 2

Class Merostomata
Class Pycnogonida
Class Arachnida

Front 3

What are the three classes in Mandibulata?

Back 3

Class Myriapoda
Class Crustacea
Class Hexapoda

Front 4

What are the four subclasses within Hexapoda?

Back 4

Subclass & Order Protura
Subclass & Order Collembola
Subclass & Order Diplura
Subclass Insecta

Front 5

What two groups are within the apterygota?

Back 5

Order Thysanura
Order Archeognatha

Front 6

Characteristics of Trilobita

Back 6

Extinct, antennae present, uniramous appendages which are undifferentiated

Front 7

Critters in Chelicerata (common names)?

Back 7

Scorpions, spiders, "sea spiders,"

Front 8

Characteristics of Chelicerata

Back 8

1st pair of appendages are chelicerae, 2nd pair are pedipalps, no antennae, prosoma (no head-thorax division)

Front 9

Characteristics of Merostomata

Back 9

Relic (4 spp), book gills, telson (tail spike)

Front 10

Orders within Merostomata?

Back 10

Order Eurypterida
Order Xiphosura

Front 11

Critters in Eurypterida

Back 11

Extinct giant sea scorpions

Front 12

Critters in Xiphosura

Back 12

Horseshoe Crabs

Front 13

MAJOR apomorphy of Xiphosura compared to other Chelicerates???

Back 13

Compound Eyes

Front 14

Appendages of Chelicerates

Back 14

12 Total
- 1 pair chelicerae
- 1 pair pedipalps
- 4 pairs legs

Front 15

Critters in Class Pycnogonida (common names)?

Back 15

Sea spiders

Hint 15

Entirely marine

Front 16

Critters in Class Arachnida(common names)?

Back 16

Scorpions, daddy long legs, mites/ticks, spiders, pseudoscorpions, tailed & tailless whip scorpions, etc

Front 17

Apomorphy of Class Arachnida?

Back 17

Single median genital opening, 0-4 pairs of simple eyes

Front 18

What three characteristics of the Arthropoda have made them so successful?

Back 18

Exoskeleton - invasion of land and flight

Metamerism - allow limb specialization

Short life span/high fecundity - higher rates of evolution

Front 19

Describe the mouthparts of the Trilobita, Chelicerata, and Mandibulata

Back 19

Trilobita - gnathobases

Chelicerata - chelicerae (on seg. 3) & gnathobases

Mandibulata - mandibles (on seg. 4) & gnathobases

Front 20

Why are the mouthparts of the Chelicerates and the Mandibulates NOT homologous?

Back 20

They're on different segments

Hint 20

Where are they...

Front 21

What are gnathobases?

Back 21

Spines on coxal bases which chew food & direct it toward mouthparts

Front 22

Arachnid excretion is via..

Back 22

Coxal glands or malpighian tubes (excreting crystals of uric acid or guanine)

Hint 22

It's NOT homologous with other terrestrial arthropods

Front 23

Order Aranae

Back 23

True Spiders

Hint 23

Modified Chelicerae into fangs...

Front 24

Order Acari

Back 24

Mites & Ticks

Hint 24

Apomorphy: prosoma & opisthosoma fused

Front 25

Order Solfugae (Solipugida)

Back 25

Wind Scorpions & Sun Spiders

Hint 25

HUGE forward pointing chelicerae

Front 26

Order Uropygi

Back 26

Whip Scorpions

Hint 26

GIANT pedipalps

Front 27

Order Amblypygi

Back 27

Tailless Whip Scorpions

Hint 27

No tail.. Harry Potter movie

Front 28

Order Opiliones

Back 28

Daddy long legs ("Harvestmen" if you're British)

Hint 28

There's a myth that they have the most dangerous venom in the world, but don't have big enough mouth parts to bite...

Front 29

Order Pseudoscorpiones

Back 29

If you got this wrong, you need help.

Pseudoscorpions

Hint 29

REALLY small

Front 30

Order Scorpiones

Back 30

Scorpions, duh.

Hint 30

You seriously needed a hint?

Front 31

Apomorphy of Subphlyum Mandibulata?

Back 31

Mandibles

Front 32

How many ganglia in Chelicerates and why..?

Back 32

Only 2 - they lack the part of the brain that controls the antennae because they have no antennae

Hint 32

Fewer than other arthropods..

Front 33

Class Myriapoda

Back 33

Centipedes, Millipedes, Pauropods, Symphylans (garden centipedes)

Hint 33

Name means "many feet"

Front 34

Characteristics of Myriapoda

Back 34

no compound eyes, uniramous limbs, 1 pair antennae, trachea, malpighian tubules, often "anamorphic"

direct development, unwaxed cuticle, unclosable spiracles

Front 35

Meaning of "anamorphic"

Back 35

Add body segments during development

Front 36

Clades of Myriapoda

Back 36

Chilopoda - centipedes

Diplopoda - Millipedes

Pauropoda - Pauropedes

Symphyla - Symphylans

Hint 36

There are 4 of them...

Front 37

Characteristics of Pauropoda

Back 37

eyeless, 3-branched antennae, soil-dwelling, ~1mm long

Front 38

Characteristics of Symphyla

Back 38

eyeless, look like centipedes but NO poison, live in gardens

Front 39

Characteristics of Chilopoda

Back 39

1 pair of legs per body segment, duh.

posterior genital opening, predators, poison fangs, 7-segmented leg

Front 40

Scolopendromorpha

Back 40

Huge freaking centipede

Hint 40

Bat killer!

Front 41

Characteristics of Diplopoda

Back 41

2 pairs of legs per body segment, duh.

no poison, genital opening anterior, have a Ca2+ hardened cuticle

Front 42

Diplopoda

Back 42

Millipedes

Front 43

Chilopoda

Back 43

Centipedes

Front 44

Critters in Class Crustacea

Back 44

Crustaceans.. but what we care about are the pillbugs (rollie pollies), woodlice, sideswimmers / scuds

Front 45

Apomorphy of Crustacea

Back 45

2 pair of antennae (2nd lost in terrestrial lineages)

Front 46

Why is there greater morphological diversity (yet fewer species) in the Crustaceans compared to insects?

Back 46

Lack of study

Aquatic - body form less constrained by gravity/air= greater diversity

Ecological niches - most of ocean volument is not as complex ecologically compared to terrestrial niches

Time - Crustaceans had 150 mil year head start on insects, more time for higher level groups (but this argues against the lack of spp.)

Front 47

Characteristics of Crustacea

Back 47

3 tagma
- carapace (head + thorax)
- abdomen

biramous limbs

Front 48

Definition of "biramous limb"

Back 48

Branched limbs

Front 49

Three subclasses under Crustacea

Back 49

Subclass Branchiopoda
Subclass Maxillopoda
Subclass Malacostraca

Hint 49

One subclass had 75% of the species

Front 50

Critters in Subclass Branchiopoda (common names)

Back 50

Zooplankton, tadpole shrimp

Front 51

Critters in Subclass Maxillopoda

Back 51

Barnacles

Hint 51

Latch onto whales and ships

Front 52

Largest Crustacean Subclass

Back 52

Malacostraca

Front 53

Three orders under Subclass Malocostraca

Back 53

Order Decapoda - lobsters, crab, shrimp

Order Isopoda - rollie pollies, pillbugs

Order Amphipoda - sideswimmers

Hint 53

One of the orders has a cameo as lunch in "The Emperor's New Groove"

Front 54

Critters in Order Decapoda (common names)

Back 54

Lobsters, crap, shrimp

Hint 54

Largest living arthropods.. and my lunch

Front 55

Critters in Order Isopoda (common names)

Back 55

Rollie pollies, pillbugs

Hint 55

Cameo as lunch in "The Emperor's New Groove"

Front 56

Critters in Order Amphipoda (common names)

Back 56

Sideswimmers, scuds

Hint 56

Laterally flattened

Front 57

Definition of "conglobation"

Back 57

To roll into a ball

Hint 57

Not as bad as it sounds..