Pro/meso/meta - stigmatid mites

Question 1

What are pro/meso/meta stigmatid parasites?

Answer 1

Prostigmatid: Demotex, Cheyletiella spp. , Chigger mites

Mesostigmatid: Dermanyssus spp. (red mites)

Metastigmatid: ticks (argasidae and ixodidae)

Question 2

Answer 2

Prostigmatid mite

Demotex

general morphology: elongated body with short legs,

colorless and transparent appearance, striated hind body,

no hairs or plates on body, very short mouthparts

Question 3

Answer 3

Prostigmatid mite

Demotex

cigar like

Question 4

Answer 4

Prostigmatid mite

Demotex - among hair

morphology: cigar like, colourless

SOS

Question 5

Answer 5

Prostigmatid mites

Demotex mite - in dissolved skin scraping

SOS

Question 6

Answer 6

Prostigmatid

Demotex mites

Question 7

Answer 7

Demodicosis of dog

squamous form

like leishamania, pustules, red colour, scratching

Question 8

Answer 8

Demodicosis of dog

squamous form around eye

Question 9

Answer 9

Pododemodicosis - digital parts of legs

Question 10

Types of demodicosis of dog

Answer 10

1. Localized/squamous form - alopecia, seborrhoea around eye and muzzle
2. Generalized or pustular form - continuous lesions on body frequently with pyioderma
3. Pododemodicosis - distal parts of legs

red mange and pyoderma = generalized

Question 11

Answer 11

Demotex - pustular form

Question 12

Answer 12

1. Red mange
2. Pyoderma
3. Pododemodicosis

Question 13

Types of demodicosis of cat

Answer 13

1. Local and squamous
2. Genaralized and pustular
3. Otitis externa - bad smell, wounds on head, itching

Question 14

Answer 14

Demodicosis of cat

Question 15

Answer 15

Prostigmatid mite

Cheyletiella yasguri (for dog)

morphology: 8 legs, 2 big hooks

Question 16

Answer 16

Prostigmatid mite

Cheyletiella yashuri

2 big hooks

Question 17

Answer 17

Prostigmatid mite

Cheyletiella blakei (for cats)

like: lice, hypoderma bovis,gasterophilus

SOS

Question 18

Answer 18

Cheyletiella egg on hair

Question 19

SOS

Who sticks eggs on the hair?

Answer 19

1. Fly: Gasterophilus - no legs, small mouthpart
2. Lice - look like adult lice
3. Cheyletiella - looks like the adult with hooks

Question 20

Answer 20

Prostigmatid mite

Cheyletiella parasitivorax, Ch. furmani - on rabbits

Question 21

Answer 21

Cheyletiella

Question 22

Answer 22

Cheyletiella

Question 23

Answer 23

Cheyletiella infestation on a puppy

Question 24

Answer 24

Mesostigmatid mite

Dermanyssus ( red mite)

Question 25

Answer 25

Mesostigmatid mite **Dermanyssus gallinae** _moprhology:_ long chelicarae and 8 long legs

Question 26

Answer 26

Mesostigmatid mite **Dermanyssus gallinae** Egg inside the body --\> female adult

Question 27

Answer 27

Mesostigmatid mite **Dermanyssus gallinae cliical signs** _Left:_ sucking blood: anemia pale breast muscle _Right:_ normal colour

Question 28

Answer 28

Mesostigmatid mite **Dermanyssus gallinae / red mite**

Question 29

Answer 29

Mesostigmatid mite **Dermanyssus gallinae/ red mites**

Question 30

Answer 30

Mesostigmatid mite **Dermanyssus galinae/ red mites**

Question 31

SOS 2 types of metastigmata - Argas and Ixodida. What is their difference ?

Answer 31

**_Argasidae - Soft ticks:_** **1.** No plates or shields on body. **2.** Feed several times in nymphal and adult stages. **3.** During development --\> more nymphal stages **_Ixodidae - Hard ticks:_** **1.** Hard shield and stiff plates on body. **2.** Feed only once in all phases of development. **3.** Development --\> one nymphal stage occurs

Question 32

Answer 32

Metastigmata **Argas persicus** _Gen.Morphology:_ yellowish brown/greyish colour, leathery, capitulum sunk into the vrentral side, no seexual dimorphism

Question 33

Answer 33

**Metastigmata** _Top:_ Argas vespertilionis _Below:_ Argas monachus

Question 34

Answer 34

Metastigmata **Argas persicus larvae** _morphology:_ long palps, long claws, body with hair SOS

Question 35

Answer 35

Metastigmata **Argas persicus - soft tick**

Question 36

Answer 36

**Soft ticks** under wallpaper - live inside the wall

Question 37

Answer 37

**Argas miniatus on poultry** Anemia, alopecia, transport of bacteria/virus

Question 38

Main features of hard/ Ixodid ticks in genera:

Answer 38

1. **Ixodes spp** - dark, plain scutum, no eyes 2. **Haemaphysialis spp** - lighter, plain scutum, no eyes 3. **Dermacentor spp** - multicoloured shield, scutum ornamented, eyes are present 3. **Rhipicephalus spp** - brown scutum, eyes are present \*scutum=shield on back, famale has a smaller one

Question 39

Answer 39

Ixodidae **Eggs of tick dermacentor deformed by loss of water**

Question 40

Answer 40

Ixodidae **Hard tick larva (Dermacentor)** _Moprhology:_ larva with 6 legs, long claws, no hair on body, no long palps

Question 41

Answer 41

SOS Hard tick **Haemophysialis sp.**

Question 42

Answer 42

SOS Hard tick **Dermacentor reticulatus**

Question 43

Answer 43

SOS Hard tick **Dermacentor reticulatus**

Question 44

Answer 44

SOS hard tick **Derrmacentor reticulatus**

Question 45

Answer 45

SOS Hard tick **Dermacentor - male**

Question 46

Answer 46

SOS hard tick **Dermacentor - female**

Question 47

Answer 47

SOS Hard tick **Rhipicephalus sp.**

Question 48

Answer 48

Egg laying females of Dermacentor marginatus ticks

Question 49

Answer 49

Tick infections of animals

Question 50

Answer 50

Tick infections of animals

Question 51

Answer 51

Tick infections of animals

Question 52

Answer 52

Lyme disease due to ticks who act as vectors