Phylum Nematoda and Arthropoda

Ascaris lumbricoides (human roundworms)

Class Chomadorea

Phylum Nematoda

Which is male and female

Female (left) and Male (right)

Enteroblus vermicularis (human pinworm)

Class Chomadorea, Phylum Nematoda

Loa Loa (human eye worm)

Class Chomadorea, Phylum Nematoda

What are microfilariae?

Larval stage of the parasitic worm

Trichuris trichuria (human whipworm)

Class Enoplea, Phylum Nematoda

Trichinella (pork worm)

Class Enoplea, Phylum Nematoda

Macrobiotus macronyx

Clade Panarthropoda, Phylum Tardigrada

Peripatopsis sedgwicki (Velvet worm)

Phylum Onychophora

Colossendeis (giant deep-sea spider)

Class Pycnogonida

Subphylum Chelicerata, Phylum Arthropoda

Limulus (Horseshoe crabs)

Order Xiphosura

Subclass Merostomata, Class Euchelicerata

Subphylum Chelicerata, Phylum Arthropoda

What is the Prosoma/Cephalothorax

The largest body section of the horseshoe crab, a rigid helmet-shaped front part of its exoskeleton

Argiope aurantia (yellow garden spider)

Order Araneae

Subclass Arachnida, Class Euchelicerata

Subphylum Chelicerata, Phylum Arthropoda

Nephila clavipes (Golden silk orb-weaver)

Order Araneae

Subclass Arachnida, Class Euchelicerata

Subphylum Chelicerata, Phylum Arthropoda

Scorpion

Order Scorpiones

Subclass Arachnida, Class Euchelicerata

Subphylum Chelicerata, Phylum Arthropoda

Ticks

Order Acari

Subclass Arachnida, Class Euchelicerata

Subphylum Chelicerata, Phylum Arthropoda

Demodex mites (dust mites)

Order Acari

Subclass Arachnida, Class Euchelicerata

Subphylum Chelicerata, Phylum Arthropoda

Millipedes

Class Diplopoda, Clade Mandibulata

Subphylum Myriapoda, Phylum Arthropoda

Centipedes

Class Chilopoda, Clade Mandibulata

Subphylum Myriapoda, Phylum Arthropoda

Pectines can best be described

comb-like chemosensory organs

The arthropod brain is composed of regions known as

Deutocerebrum: processes sensory information from the antennae

Protocerebrum: optic center

Tritocerebrum: coordinating the mouthparts and the stomatogastric nervous system

What is the Malpighian tubules?

excretory organs that arise from the junction of midgut and hindgut in Chelicerata