Parasitology Images Flashcards by Ashley Ackert

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Gravid proglottid

Cyclophyllideans - true tapeworms

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Dipylidium caninum

“Cucumber Seed Worm/Double-pored Tapeworm”

(egg packet)

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Cytauxzoon felis

(schizont)

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Ixodes scapularis

“Black-legged Tick”

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Anoplocephala perfoliata

“Lappeted Tapeworm”

(hexacanth embryo)

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Haemonchus contortus

“Barberpole Worm”

(adult)

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Stomoxys calcitrans

“Stable Fly”

(adult)

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Q

4 sporocysts w/ 2 sporozoites each

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Eimeria spp.

(oocyst)

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Oxyuris equi

“Large Equine Pinworm”

(egg - asymmetrical, “operculated”, unembryonated)

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Platynosomum concinnum (aka fastosum)

“Lizard Poisoning Fluke”

(adult)

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Fasciola hepatica

“Live Fluke”

(circariae)

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Oxyuris equi

“Large Equine Pinworm”

(adult)

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Tritrichomonas foetus/blagburni

“Trichomonads”

(Adults)

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Toxoplasma gondii

(bradyzoite - tissue cyst)

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Cysticercoid (cestodes larvae type)

single scolex
NOT invaginated

Cestodes - tapeworms

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Ancylostoma caninum

“Canine Hookworm”

(adult)

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Bothria - sucker attachment w/ out hooks

compare to scolex

Characteristic of pseudophyllideans (pseudotapeworms)

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Trypanosoma cruzi

(amastigote - pseudocyst)

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Trypanosoma cruzi

(trypomastigote)

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Gravid proglottids

Pseudophyllideans - pseudotapeworm

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Dermacentor variabilis

“American Dog Tick/Wood Tick”

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Fasciola hepatica

“Live Fluke”

(miracidia)

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Trichinella spiralis

“Trichina Worm”

(Adult)

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Cytauxzoon felis

(piroplasms - within RBCs)

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*Otodectes cynotis* "Ear Mite"

# Head wider than thorax Name Order

Order Mallophaga "Chewing/Biting Lice"

*Dipylidium caninum* "Cucumber Seed Worm" (adult)

Name the superfamily

*Trichostrongyle* (HOTC) Nematode superfamily (eggs)

*Heterobilharzia americana* "Canine Blood Fluke" (egg)

*Trichinella spiralis* "Trichina Worm" (Larvae)

*Toxoplasma gondii* (tachyzoites)

*Anoplocephala perfoliata* "Lappeted Tapeworm" * lappets ("bowties) behind each sucker (adult)

*Anopheles* spp. (mosquito)

Type II Ostertagiasis Mucosal reddening

*Toxocara canis* "Canine Ascarids" (egg - thick shelled)

*Rhipicephalus sanguineus* "Brown Dog Tick"

*Dirofilaria immitis* "Canine Heartworm" (Microfilariae - prelarval stage)

*Fasciola hepatica* "Liver Fluke" (egg - operculated)

*Ancylostoma caninum* "Canine Hookworm" (egg - non-embryonated)

2 sporocysts w/ 4 sporozoites each.

*Cystoisospora* spp. (oocyst)

*Spirometra mansonoides* Pseudophyllidean - pseudotapeworm (egg - operculated)

*Dirofilaria immitis* "Canine Heartworm" (Embryo)

*Culex* spp. (mostquito)

*Sarcocystis* spp. (sarcocyst)

*Demodex canis* "Follicle Mite"

*Heterobilharzia americana* "Canine Blood Fluke" (adults - dioecious)

*Fasciola hepatica* "Live Fluke" (metacercariae)

*Fasciola hepatica* "Liver Fluke" (Adult stage)

*Aedes* spp. (mostquito)

*Sarcoptes scabiei* "Scabies" - Mite

*Echidnophaga gallinacean* "Stick-tight Flea, Poultry Flea" (adult female)

*Chrysops* spp. "Deer Fly" (larvae)

Multilocular Hyatid Cyst (cestodes larvae type) * 100's or 1000's of protoscolices * Encapsulated * Bubbles out & spreads like cancer Cestodes - tapeworm

Mature proglottid - 2 sets of reproductive organs Cyclophyllideans - true tapeworms

*Giardia* spp. (Trophozoite) - 8 flagella - 2 nuclei

Cysticercus (cestodes larvae type) * single scolex * Invaginated Cestodes - tapeworm

*Spirometra mansonoides* Pseudophyllidean - pseudotapeworm (adult)

*Tabanus* spp. "Horse Fly" (adult)

*Amblyomma americanum* "Lone Star Tick" L: Male R: Female

*Spirometra mansonoides* Pseudophyllidean - pseudotapeworm (plerocercoids/sparganum)

* Taeniid* Tapeworms * Indistinguishable hexacanth embryo from others *taeniid spp.*

*Pulex simulans* "Flea" (adult female)

*Giardia* spp. (Cyst) -4 nuclei

*Tabanus* spp. "Horse Fly" (larvae)

*Sarcocystis* spp. (oocyst)

Type I Ostertagiasis "Moroccan leather" appearance of abdominal mucosa

*Ctenocephalides felis* "Flea" L: female R: male

*Cryptosporidium* spp.

Toxocara canis "Canine Ascarids" (adult)

*Sarcocystis* spp. (schizont - form rosette)

*Ostertagia ostertagi* "Brown Stomach Worm" (adult)

Coenurus (cestodes larvae type) * many scolices * invaginated Cestodes - tapeworm

*Spirometra mansonoides* Pseudophyllidean - pseudotapeworm (procercoid)

*Chrysops* spp. "Deer Fly" (adult)

# Thorax wider than head Name Order

Order Anoplura "Sucking Lice"

*Toxoplasma gondii* (oocyst - sporulated on L, unsporulated on R)

*Platynosomum concinnum* (aka *fastosum*) "Lizard Poisoning Fluke" (egg - operculated)

*Taenia pisiformis* "Rabbit tapeworm"/"Abdominal bladderworm" (adult)

Unilocular Hyatid Cyst (cestodes larvae type) * 100's or 1000's of protoscolices * Encapsulated Cestodes - tapeworm

*Dirofilaria immitis* "Canine Heartworm" (Adult)

*Platynosomum concinnum* (aka *fastosum*) "Lizard Poisoning Fluke" (metacercariae)