Arthropoda Phylum Chelicerata Subphylum Horseshoe crab Common name

Arthropoda Phylum? Chelicerata Subphylum? Horseshoe crab Common name?

Phylum? Arthropoda Subphylum? Chelicerata Common Name? Sea spider

Phylum: Arthropoda Common name: 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: Cardiac stomach B: Pyloric stomach C: Posterior gastric muscle D: Digestive gland E: Heart F: Dorsal abdominal artery G: Ostia of heart G A B C D E F

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

A: Abdomen B: Telson C: Compound eye D: Cephalothorax A C B D

Phylum? Arthropoda Subphylum? Crustacea Common name? Copepod

Note that I am laterally flattened What am I? An amphipod

Phylum? Arthropoda Subphylum? Crustacea Decapods Fiddler Crab

Arthropoda Phylum? Subphylum? Crustacea Common name? Copepod

Phylum? Arthropoda Subphylum? Crustacea How does this animal feed? It is a filter feeder using modified legs called cirri to grab particles from the water column

Both of these animals are? Isopods

D C A B I E G F H

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

E A E B C D F

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

Arthropoda Phylum? Subphylum? Chelicerata Common name? Horseshoe crab C A D B E

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

A B C D E F G H I

• • • 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

A B C D

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

A B G C D E F

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

Copulatory swimmeret Opening of vas deferens

Phylum Arthropoda Subphylum Chelicerata Proboscis Cephalothorax Abdomen

A B C D

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