Alvinellidae (Pompeii Worms)
	Paralvinella palmiformis (Palm Worm)
Ancylostomatidae
	Ancylostoma caninum (Dog Hookworm)
	Bunostomum phlebotomum (Cattle Hookworm)
	Bunostomum trigonocephalum (Sheep Hookworm)
Angiostrongylidae
	Aelurostrongylus abstrusus (Cat Lungworm)
	Angiostrongylus cantonensis (Rat Lungworm)
	Angiostrongylus costaricensis (American Rat Lungworm)
	Angiostrongylus vasorum (French Heartworm)
Anisakidae
	Anisakis simplex (Herring Worm)
	Pseudoterranova decipiens (Codworm)
	Pseudoterranova decipiens (Sealworm)
Anoplocephalidae
	Moniezia expansa (Sheep Tapeworm)
Aphelenchoididae
	Bursaphelenchus cocophilus (Red Ring Nematode)
	Bursaphelenchus xylophilus (Pine Wilt Nematode)
	Bursaphelenchus xylophilus (Pine Wood Nematode)
	Bursaphelenchus xylophilus (Pinewood Nematode)
Arenicolidae
	Arenicola marina (Lugworm)
	Arenicola marina (Rock Worm)
Ascarididae
	Ascaris lumbricoides (Common Roundworm)
	Ascaris suum (Pig Roundworm)
	Baylisascaris ailuri (Red Panda Roundworm)
	Baylisascaris procyonis (Raccoon Roundworm)
	Baylisascaris schroederi (Giant Panda Roundworm)
	Baylisascaris transfuga (Bear Roundworm)
Belonolaimidae
	Belonolaimus longicaudatus (Sting Nematode)
Capsalidae
	Benedenia seriolae (Kingfish Skin Fluke)
Cerebratulidae
	Cerebratulus lacteus (Milky Ribbon-Worm)
	Cerebratulus lacteus (Milky Ribbon Worm)
	Parborlasia corrugatus (Corrugated Ribbon Worm)
Chabertiidae
	Chabertia ovina (Large-Mouth Bowel Worm)
	Oesophagostomum dentatum (Nodule Worm)
	Oesophagostomum dentatum (Pig Nodule Worm)
Chaetodermatidae
	Chaetoderma nitidulum (Glistenworm)
Cossidae
	Acossus centerensis (Aspen Carpenterworm)
	Acossus centerensis (Poplar Carpenterworm)
	Prionoxystus robiniae (Carpenterworm)
Dictyocaulidae
	Dictyocaulus eckerti (Red Deer Lungworm)
	Dictyocaulus viviparus (Bovine Lungworm)
Diphyllobothriidae
	Diphyllobothrium latum (Broad Fish Tapeworm)
	Diplogonoporus balaenopterae (Whale Tapeworm)
	Diplogonoporus grandis (Diplogonadic Human Tapeworm)
Dracunculidae
	Dracunculus medinensis (Dracunculiasis Worm)
	Dracunculus medinensis (Guinea Worm)
	Dracunculus medinensis (Guinea Worm Disease Nematode)
Dugesiidae
	Schmidtea mediterranea (Freshwater Planarian)
Echinorhynchidae
	Echinorhynchus gadi (Proboscis Worm)
Enchytraeidae
	Mesenchytraeus solifugus (Glacier Ice Worm)
Fasciolidae
	Fasciola hepatica (Liver Fluke)
Glossiphoniidae
	Haementeria ghilianii (Amazon Leech)
	Haementeria officinalis (Mexican Leech)
	Placobdella ornata (Turtle Leech)
Glyceridae (Bloodworms)
	Glycera americana (American Bloodworm)
Gyrodactylidae
	Gyrodactylus salaris (Gyrodactylosis Fluke)
Haemadipsidae
	Haemadipsa sylvestris (Indian Leech)
Haemonchidae
	Haemonchus contortus (Barber Pole Worm)
	Haemonchus contortus (Red Stomach Worm)
Heteroderidae
	Heterodera avenae (Cereal Cyst Nematode)
	Heterodera avenae (Oat Cyst Nematode)
	Heterodera glycines (Soybean Cyst Nematode)
	Heterodera goettingiana (Pea Cyst Nematode)
	Heterodera zeae (Corn Cyst Nematode)
Hirudinidae
	Hirudo medicinalis (Medicinal Leech)
	Macrobdella decora (North American Leech)
Hymenolepididae
	Hymenolepis diminuta (Rat Tapeworm)
Longidoridae
	Xiphinema americanum (American Dagger Nematode)
Lumbricidae
	Eisenia fetida (Brandling Worm)
	Eisenia fetida (Common Brandling Worm)
	Eisenia fetida (Common Dung-Worm)
	Eisenia fetida (Red Wiggler Worm)
	Eisenia fetida (Redworm)
	Eisenia fetida (Tiger Worm)
	Lumbricus rubellus (Humus Earthworm)
	Lumbricus terrestris (Common Earthworm)
Maldanidae
	Clymenella torquata (Bamboo Worm)
Megascolecidae
	Perionyx excavatus (Asian Blue Worm)
	Perionyx excavatus (Blue Worm)
	Perionyx excavatus (Oriental Composting Worm)
	Pheretima sieboldi (Earthworm)
Meloidogynidae
	Meloidogyne incognita (Southern Root-Knot Nematode)
	Meloidogyne javanica (Root-Knot Nematode)
Microcotylidae
	Microcotyle sebastis (Rockfish Gill Parasite)
Naididae (Sludge Worms)
	Tubifex tubifex (Sludge Worm)
Nereididae (Sandworms)
	Platynereis dumerilii (Dumeril's Clam Worm)
	Tylorrhynchus heterochaetus (Japanese Palolo)
Oligacanthorhynchidae
	Macracanthorhynchus hirudinaceus (Giant Thorny-Headed Worm)
	Macracanthorhynchus hirudinaceus (Giant Thorny-Headed Worm Of Swine)
Onchocercidae
	Brugia malayi (Agent Of Lymphatic Filariasis)
	Chandlerella quiscali (Grackle Nematode)
	Dirofilaria immitis (Canine Heartworm Nematode)
	Dirofilaria immitis (Dog Heartworm Nematode)
	Loa loa (Eye Worm)
	Wuchereria bancrofti (Agent Of Lymphatic Filariasis)
Opisthorchiidae
	Clonorchis sinensis (Oriental Liver Fluke)
	Opisthorchis felineus (Cat Liver Fluke)
	Opisthorchis viverrini (Southeast Asian Liver Fluke)
Oxyuridae
	Enterobius anthropopitheci (Chimpanzee Pinworm)
	Enterobius vermicularis (Human Pinworm)
Peripatopsidae
	Opisthopatus roseus (Pink Velvet Worm)
Pratylenchidae
	Pratylenchus vulnus (Walnut Meadow Nematode)
	Pratylenchus vulnus (Walnut Root-Lesion Nematode)
	Radopholus similis (Banana-Root Nematode)
Pseudocerotidae
	Pseudoceros bicolor (Two-Colored Flatworm)
Rhabditidae
	Caenorhabditis elegans (Nematode)
Sabellidae
	Sabellastarte magnifica (Feather Duster)
Schistosomatidae (Blood Flukes)
	Trichobilharzia regenti (Bird Nasal Schistosome)
Serpulidae
	Hydroides elegans (Calcareous Tube Worm)
Sipunculidae
	Phascolopsis gouldii (Peanut Worm)
	Sipunculus nudus (Marine Worm)
Steinernematidae
	Steinernema scapterisci (Mole Cricket Nematode)
Strongylidae
	Strongylus vulgaris (Bloodworm)
Syngamidae
	Syngamus trachea (Gapeworm)
Taeniidae
	Echinococcus equinus (Horse Tapeworm)
	Taenia martis (Marten Tapeworm)
	Taenia ovis (Sheep Tapeworm)
	Taenia saginata (Beef Tapeworm)
	Taenia solium (Pig Tapeworm)
	Taenia solium (Pork Tapeworm)
Thelaziidae
	Thelazia callipaeda (Eyeworm)
	Thelazia callipaeda (Thelaziosis Nematode)
Toxocaridae
	Toxocara canis (Dog Roundworm)
	Toxocara cati (Cat Roundworm)
	Toxocara cati (Feline Roundworm)
Trichuridae
	Trichuris suis (Pig Whipworm)
	Trichuris trichiura (Human Whipworm)
Tylenchulidae
	Tylenchulus semipenetrans (Citrus Nematode)