Order Acari

Question 1

Small, oval or globular mites, and legs are arranged in pairs (1-2, 3-4).
-Stigmata is absent

Answer 1

Suborder Sarcoptiformes
Astigmatid mites

Question 2

Large mites that appear like ticks
-stigmata is located in the middle of the body

Answer 2

Suborder Mesostigmata
Gamisid Mites

Question 3

stigmata located anterior the 1st pair of legs

Answer 3

Suborder Trombidiformes
Prostigmatid mites

Question 4

Found in crevices near nests or bird coops (adult and nymph only active at night)
-absent host: can survive >2 years
-flaccid paralysis and anemia in young chickens

Answer 4

Family Argasidae
Argas persicus
“fowl tick”

disease: Borrelia anserine (avian sporochetosis)

Question 5

Spinose ear tick

Answer 5

Otobius megnini
Host: wild cervids, mammal, man
Disease: Francisella tularensis (Tularemia)

Question 6

Hut Tampan

Answer 6

Ornithodorus maubata
Host: deer, mammal
disease: Epizoonotic bovine abortion
Borrelia spp.

Question 7

Disease of Dermacentor variabilis

Answer 7

Host dog
Tick paralysis
Rocky mountain spotted fever (rickettsia rickettsia)

Question 8

Dermacentor andersoni

Answer 8

Host: Dog Cattle
Bovine Anaplasmosis (Anaplasma marginale)
Rocky mountain spotted fever
Colorado tick fever virus Tularemia

Question 9

Rhipicephalus sanguineus

Answer 9

Host: Dog
“brown dog tick”
diseases:
Canine babesiosis (Babesia canis, G. gibsoni)
Canine ehrlichiosis (Ehrlichia canis)
Canine hepatozoonosis (Hepatozoon canis)

Question 10

“blue ticks”

Answer 10

Genus Boophilus
One-host ticks
Boophilus annulatus
Boophilus microplus

Question 11

lone star tick

Answer 11

Amblyomma americanum
Host: dog, cat, mammals, man
Disease: Lyme disease (Borellia burgdorferi)
Rocky mountain spotted fever
Tularemia

Question 12

Bites can cause “glotch ear” / deformity of the ear in cattle

Answer 12

Amblyomma maculatum
“gulf coast tick”
disease: Hepatozoon americanum
Host: cattle, horses, sheep, carnivores

Question 13

Tick found in snakes and monitor lizards

Answer 13

Amblyomma gervaisi

Question 14

Tick vector of Heartwater in cattle

Answer 14

Tick: Amblyomma habraeum
“south african bont tick”
disease: Ehrlichia ruminatum

Question 15

Nymphal stages of mites

Answer 15

Protonymph
Deutonymph
Tritonymph

Question 16

Mites that hide during the day in nests and resting spots and only attacks host at NIGHT.
Bite Lesions: legs and breast
Nymphal: Protonymph > Deutonymph

Answer 16

Dermanyssus gallinae
host: fowl
“red chicken mite”

Question 17

Mite: disease
Fowl pox, Newcastle disease & pasteurella
eggs are laid at the base of feathers around the vent
-found during the day.

Answer 17

Genus Ornithonyssus
Ornithonyssus Bursa
Host: fowls
“tropical fowl mite”

Question 18

Reptile Mite & it’s disease

Answer 18

Ophionyssus natricis
Host: snakes, lizards, turtles, crocodiles
Disease: ophidian paramyxovirus

Question 19

Causes sarcoptic Mange;
Clinical signs/ lesions

Answer 19

Sarcoptes scabiei
“itch mite”
Intense pruritus with YELLOWISH exudate, crusting, hyper keratinization, alopecia

Question 20

Causes Notoedtric mange (located mainly in the face, ears and neck)

Answer 20

Notoedres cati
(feline scabies mite)
Host: cat, dog, rabbit

Question 21

causes scaly leg: irritation, crusting, deformity and thickening of legs (will lift the scales off the skin)

Answer 21

Knemidocoptes mutans
(scaly leg mite)
Host: Chicken, Turkey, pheasants, other fowls

Question 22

Intense pruritus and feather loss (vent)
Depluming itch

Answer 22

Knemidocoptes gallinae

Question 23

Scaly face mite: host - fowls

Answer 23

Knemidocoptes pilae

Question 24

legs are long and end in long, trumpet-shaped pedicles;
Does not burrow in the epidermis but remains in the base of the hairs and pierces skin with its chelicerae

Answer 24

Genus Psoroptes

Question 25

Causes sheep scab; pruritic dermatitis
- only mite with 2-jointed pretarsi

Answer 25

Psoroptes ovis
Host: sheep

Question 26

Psoroptic otocariasis in rabbits

Answer 26

Psoroptes cuniculi

Question 27

Similar to Psoroptes, but the pedicles are shorted and more cup-like; Chelicerae do not pierce skin and instead chew on skin

Answer 27

Genus Chorioptes

Question 28

Causes Chorioptic mange; mild puritus, flaky dermatitis of the tail, escutcheon, hindlegs
- Chorioptic mite of cattle

Answer 28

Chorioptes bovis
Host: ruminants
“Chorioptic mite of cattle”

Question 29

causes formation of grey deposits or brown waxy exudate in ear canal. intense pruritus, otitis externa, circling.
Host?

Answer 29

Otodectes cynotis
“ear mite”
Host: dog, cat, other carnivores

Question 30

Only known endoparasitic mite infecting respiratory tract of birds; ovoviviparous

Answer 30

Cytodites nudus
“Air-sac mite”
Host: fowl

Question 31

causes Demodicosis; alopecia, coppery-red hyperpigmentation, lichenification, mousy odour

Answer 31

Genus Demodex

Question 31

causes Demodicosis; alopecia, coppery-red hyperpigmentation, lichenification, mousy odour

Answer 31

Demodex canis
Host: dog

Question 32

Demodecosis in goats (what form)
species involved

Answer 32

Pustular form found in the face
Species: Demodex caprae

Question 33

Demodicosis in pig (what form)
species involved

Answer 33

Forms large pustules that may rupture
Demodex phylloides

Question 34

Demodex found man

Answer 34

Demodex folliculitis
Reddish with pustules that may rupture

Question 35

rabbit fur mite
Mites can be visibly seen in the skin debris of the host and is commonly names “walking dandruff”

Answer 35

Cheyletiella parasitivorax
Host: rabbit. cat, dog