Ecdysozoa

Nematoda

diverse, ubiquitous, parasitic, longitudinal muscles only

C. elgans

soil, E.coli/yeast

turbatraix aceti

vinegar, wavy/synced beats

Enterobius vermicularis

pinworm, pruitis ani, human intestine

Trichinella spiralis

trichinosis, ingested infected meat/pig intestine

Ascaris lumbricoides

causes ascariasis, intestinal/fecal parasite in humans

Necator americanum

hookworms, feces/intestine

filarial worms

dirofilaria immitis, wuchereria bancrofti, dracunculus medinensis, onchocerca volvulus

dirofilaria immitis

heatworm, mosquito/dog

wuchereia bancrofti

mosquito, elephantisis, enlargement of limbs from lymph

dracunculus medinesis

guinea worm, water flea, leaves from foot/pulled by stick

onchocerca volvulus

river blindness, blackfly

nematomorpha

gordian/horsehair worms, parasitic larvae, nonfeeding adults

arthropoda

largest/most diverse phyla, jointed appendages, ecdysis

ecdysis

shedding

trilobita

extinct, branched appendages

chelicerata

crabs, spiders, scorpions

cephalothroax/opisthoma

merostomata, pycnogonida, arachnida

merstomata

horseshoe crabs

0 antennae, 4 pairs of legs

pycnogonida

sea spiders, predators/parasites

0 antennae, 4 pairs of legs

arachnida

scorpiones, acari, opiliones

0 antennae, 4 pairs of legs

scorpiones

scorpions

acari

mites

opiliones

daddy long legs (not spiders)

mandibulata

crustacea, myriapoda, insecta

crustacea

cephalothorax/opisthosoma, 2 pair antennae, 5 pairs of legs

maxillopoda, malacostraca

maxillopoda

ostracods

malacostraca

crabs, lobsters, krill

myriapoda

chilpoda, diplopoda

chilopoda

centipedes

1 pair legs/segment, head trunk, venemous

diplopoda

millipedes

2 pair legs/diplosegment, not venomous, head trunk

insecta

head thorax abdomen, 0-2 wings, 3 pairs legs, 1 pair antennae

odonata, orthoptera, hemiptera, coleoptera, diptera, hymenoptera, lepidoptera

ametabolous

no metamorphosis

ex: silverfish

hemimetabolous

larvae/nymph stage

holometabolous

full metamorphosis, pupae

ex: butterfly

odonata

dragonflies/damselflies

orthoptera

grasshoppers, crickets

hemiptera

true bugs, aphids, cicada

coleoptera

beetles

diptera

2/1 pair wings

flies, mosquito

hymeoptera

bees, wasps, ants

lepidoptera

4/2 pairs wings

butterflies, moths

cyliphora

lobster mouth parasites, dwarf male, recently discovered