1.
American Dog Tick: 
Dermacentor spp.
2.
Amoebic dysentery: 
Entamoeba histolytica
3.
Babesiosis: 
Babesia spp.
4.
Barber Pole Worm: 
Haemonchus spp.
5.
Bird mite (Scaley face - scaley leg): 
Knemidocoptes spp.
6.
Bird roundworm: Ascaridia galli
7.
Black fly (buffalo gnats): Simulium spp.
8.
Bot fly (Warble fly): Hypoderma lineatum
9.
Brisket worm/ Abdominal worm: Stephanofilaria stilesi
10.
Broadfish tapeworm: 
Diphyllobothrium latum
11.
Brown Dog Tick: Ripicephalus spp. (Rhipicephalus spp.)
12.
Brown Stomach Worm: 
Ostertagia spp.
13.
Cat biting louse: 
Felicola subrostratus
14.
Cat flea: 
Ctenocephalides felis
15.
Cat lungworm: 
Aelurostrongylus spp.
16.
Cat roundworm: Toxocara cati
17.
Cat Whipworm: Trichuris felis
18.
Cat, rodent, rabbit tapeworm (single-pored tapeworm): 
Taenia taeniaformis
19.
Cattle biting louse: 
Damalinia bovis
20.
Cattle Bot fly: Hypoderma bovis
21.
Cattle hookworm: Bunostomum spp.
22.
Cattle roundworm: Toxocara vitulorum
23.
Chagas' Disease: 
Trypanosoma cruzi
24.
Coccidia: 
Eimeria spp. & Isospora spp.
25.
Cooper's Worm/Cattle Bankrupt Worm: 
Cooperia spp.
26.
Cosmopolitan beef tapeworm: 
Taenia saginata
27.
Cow Whipworm: Trichuris bovis
28.
Deer fly: Chrysops spp.
29.
Deer Tick: 
Ixodes spp.
30.
Dog and cat roundworm: Toxascaris leonina
31.
Dog biting louse: 
Trichodectes canis
32.
Dog flea: 
Ctenocephalides canis
33.
Dog lungworm: Filaroides spp.
34.
Dog roundworm: Toxocara canis
35.
Dog Whipworm: Trichuris vulpis
36.
Dog, cat or human intestinal threadworm: 
Strongyloides stercoralis
37.
Dog, rodent, rabbit tapeworm (single-pored tapeworm): 
Taenia pisiformis
38.
Dwarf tapeworm: Hymenolepis nana
39.
Ear mite: 
Otodectes spp.
40.
Equine intestinal threadworm: Strongyloides westeri
41.
Equine pinworm: Oxyuris equi
42.
Equine roundworm: 
Parascaris equorum
43.
Equine stomach worm: 
Habronema spp.
44.
Equine tapeworm: 
Anoplocephala spp.
45.
Esophageal worm: Spirocerca lupi
46.
Eye worm: 
Thelazia spp.
47.
Feline Cytauxzoonosis: 
Cytauxzoon felis
48.
Flea Tapeworm (cucumberseed tapeworm/ double-pored tapeworm): 
Dipylidium caninum
49.
Follicular mange: 
Demodex spp.
50.
Fox Lungworm: Eucoleus aerophilus
51.
Giant Kidney Worm: 
Dioctophyma renale
52.
Giardiasis: 
Giardia spp.
53.
Heartworm: 
Dirofilaria immitis
54.
Hookworm (dog, fox, cat, ruminant...has own superfamily): Ancylostoma spp.
55.
Horn fly: Haematobia irritans
56.
Horsefly: Tabanus spp.
57.
Human Crab louse: 
Phthirus pubis
58.
Human flea: 
Pulex simulans
59.
Human Head louse: 
Pediculus humanus capitis
60.
Human pinworm: Enterobius vermicularis
61.
Human Whipworm: Trichuris trichiura
62.
Hydatid tapeworm: 
Echinococcus granulosus & Echinococcus multiocularis
63.
Large Mouth Bowel Worm: Chabertia spp.
64.
Liver Fluke: 
Fasciola hepatica
65.
Lone Star Tick: 
Amblyomma spp.
66.
Long-nosed cattle louse: 
Linognathus vituli
67.
Lung Fluke: 
Paragonimus kellicotti
68.
Lungworm: Dictyocaulus spp.
69.
Mosquito: Culex spp.
70.
Neck Threadworm: Onchocerca cervicalis
71.
Nodular Worm: Oesophagostomum spp.
72.
North American Chigger: 
Trombicula spp.
73.
Northern hookworm: Uncinaria spp.
74.
Parasitic nematode: Pelodera (Rhabditis) strongyloides
75.
Pig intestinal threadworm: Strongyloides ransomi
76.
Pig lungworm: Metastrongylus spp.
77.
Pig roundworm: 
Ascaris suum
78.
Pig Whipworm: Trichuris suis
79.
Pork tapeworm: 
Taenia solium
80.
Raccoon roundworm: Bayliascaris procyonis
81.
rat tapeworm: Hymenolepis diminuta
82.
Red Stomach Worm: 
Hyostrongylus rubidus
83.
Rodent Bot fly: Cuterebra spp.
84.
Ruminant intestinal threadworm: Strongyloides papillous
85.
Ruminant tapeworm: 
Moniezia spp.
86.
Salmon Poisoning Fluke: Nanophyetus salmincola
87.
Scabies: 
Sarcoptes spp.
88.
Screw worm fly: Cochlioma spp.
89.
Sheep Whipworm: Trichuris ovis
90.
Short-nosed cattle louse: 
Haematopinus spp.
91.
Spinous Ear Tick: 
Otobius spp.
92.
Stable fly: Stomoxys spp.
93.
Stick-tight flea: 
Echidnophaga gallinacea
94.
Stomach Bot fly: Gastrophilus spp.
95.
Stomach worm of cats and dogs: Physaloptera spp.
96.
Subcutaneous worm: 
Acanthocheilonema reconditum
97.
Swine Kidney Worm: Stephanurus dentatus
98.
Texas Cattle Fever Tick: Boophilus spp.
99.
Thin-necked/Thread-necked intestinal worm: 
Nematodirus spp.
100.
Thorny-headed worm/ Spiny headed worm: 
Macracanthorhynchus hirudinaceus
101.
Toxoplasmosis: 
Toxoplasma gondii
102.
Trichina worm: Trichinella spiralis
An individual worm of this species is called a trichina, from the Greek word meaning "hairlike."
103.
Trichomoniasis: 
Trichomonas spp.
104.
Walking Dandruff mite: 
Cheyletiella spp
105.
Wing louse: 
Lipeurus spp.