Phylum?Subphylum?Common name?

ArthropodaChelicerata

Horseshoe crab

Phylum?

Subphylum?

Common Name?

Arthropoda

Chelicerata

Sea spider

Phylum:

Common name:

Arthropoda

Amphipod

Common name? Isopod

What is this? An amphipod

What are these? Barnacles

What is this?

A gooseneck barnacle

What is this? A fish louse which is an isopod

What are these?Rock lice – which are isopods

A

B

C

D

E

F

G

A:

B:

C:

D:

E:

F:

Antenna

Cheliped

3rd Walking Leg

Carapace

Abdomen

Uropod

A

B C D E F

G

A:

B:

C:

D:

E:

F:

G:

Cardiac stomach

Pyloric stomach

Posterior gastric muscle

Digestive gland

Heart

Dorsal abdominal artery

Ostia of heart

AB

C

D

A:

B:

C:

D:

Proboscis

Pedipalp

Cephalothorax

Abdomen

CA

BD

A:

B:

C:

D:

Abdomen

Telson

Compound eye

Cephalothorax

Phylum?

Subphylum?

Common name?

Arthropoda

Crustacea

Copepod

Note that I am laterally flattened

What am I? An amphipod

Phylum? Subphylum?

Decapods

Fiddler Crab

Arthropoda

Crustacea

Phylum?Subphylum?Common name?

ArthropodaCrustacea

Copepod

Phylum?

Subphylum?

How does this animal feed?

Arthropoda

Crustacea

It is a filter feeder using modifiedlegs called cirri to grab particles from the water column

Both of these animals are?Isopods

B

EF

GH

I

C DA

• A: Antennae• B: Antennules• C: Cephalothorax• D: Abdomen• E: Cheliped• F: Walking legs• G: Swimmerets• H: Uropod• I: Telson

E

E

FC

D

A

B

• A: Anterior gastric muscle• B: Posterior gastric muscle• C: Gills• D: Heart• E: Rostrum• E: Cardiac stomach• F: Ostia of heart

C

A

B

D

E

Phylum?Subphylum?Common name?

ArthropodaChelicerata

Horseshoe crab

• A: Abdomen• B: Telson• C: Simple eye• D: Compound eye• E: Cephalothorax

G

AB C D

E

FIH

• A: Gastric teeth• B: Pyloric stomach• C: Heart• D: Gonad (Testis)• E: Dorsal abdominal artery• F: Intestine• G: Green gland• H: Digestive gland• I: Uropod

DA

BC

• A: Compound eye• B: Pyloric stomach• C: Mandibular muscle• D: Cardiac stomach

A

B

C

D

EF

G

• A: Antenna• B: Cheliped• C: Walking leg• D: Carapace• E: Abdomen• F: Telson• G: Antennule

Copulatory swimmeret

Opening of vas deferens

Abdomen

Cephalothorax

Proboscis

Phylum ArthropodaSubphylum Chelicerata

AB

C

D

• A: Proboscis• B: Pedipalp• C: Cephalothorax• D: Abdomen