INSECTS: Argasids and Mites

Question 1

What common name is associated with argasids?

Answer 1

Soft ticks

Question 2

What characteristics are associated with argasids?

Answer 2

• No scutum
• Leathery tegument, spinose, and bumpy
• Ventral mouthparts
• Over 2 nymphal stages

Question 3

What is the common name for Otobius spp.?

Answer 3

Spinose ear tick

Question 4

What is present on Otobius spp. adults?

Answer 4

Short, sharp spines

Question 5

While larvae and nymphs are taxied, adults will -?

Answer 5

Not be on the animal, and do not feed

Question 6

Where will Otobius infestations occur, and what can come of it?

Answer 6

Ear canals, and anemia

Question 7

What is the common name for Argas spp.?

Answer 7

Fowl tick

Question 8

What morphology is associated with Argas adults?

Answer 8

• Leathery, textured appearance
• Lateral line or crease
• Larger genital pore in females

Question 9

What characteristics are associated with Argasids?

Answer 9

• Engorge rapidly
• Survive arid conditions
• Frequent feedings
• Disease transmission

Question 10

How can mites be identified?

Answer 10

• Scales, spines, and setae on the body
• Legs have claws or suckers

Question 11

Sarcoptidae spp. are ___________ mites, while Otodectes are restricted to a specific area of the body.

Answer 11

Burrowing

Question 12

What mite species are non-burrowing?

Answer 12

• Psoroptes*
• Cheyletiella*
• Chorioptes*

Question 13

What common name is associated with Sarcoptes scabiei?

Answer 13

Sarcoptic mange mite, Itch mite, Scabies mite

Question 14

What morphology is associated with S. scabiei?

Answer 14

• Round
• Short legs
• 3rd and 4th pairs do not extend beyond body margin

Question 16

Infesting the skin, S. scabiei will lead to -?

Answer 16

Erythema, scale, and crust (dried serum, and blood) formation leading to pruritis. All beginning with hair loss on the lateral elbow and ear pinna.

Question 17

In swine, S. scabiei is spread from _______ to ______, with signs capable of appearing within 3 _______ from birth. The first lesions are wheals, leading to erythema that progresses to scabs, crust formation and __________, or thickening of the skin.

Answer 17

Sow

Piglets

Weeks

Hyperkeratosis

Question 18

Where can S. scabiei be found on swine?

Answer 18

In earwax

Question 19

Treating the sow, prior to farrowing, can be done for S. scabiei as a reliable indicator when older is -?

Answer 19

Pruritis over mite recovery during skin scrapings

Question 20

In what species will S. scabiei be prevalent in the epidermal layers of the skin, as scaly or thickened skin? As well as being reportable?

Answer 20

Cattle

Question 21

WWhat is the most pathogenic cattle mange?

Answer 21

S. scabiei

Question 22

A loss in production from S. scabiei can occur in -?

Answer 22

Cattle

Question 23

What can be administered to lactating dairy cattle for S. scabiei?

Answer 23

Eprinomectin

Question 24

What common name is associated with Notoedres cati?

Answer 24

Notoedric cat mite

Question 25

While similar to *S. scabiei*, what difference is associated with *Notoedris cati?*

Answer 25

Its about half its size

Question 26

What is the common name for *Knemidoctoptes spp.?*

Answer 26

Scaly leg mite, Scaly face mite

Question 27

What species are affected by *Knemidoctoptes spp.*?

Answer 27

Fowl

Question 28

*Knemidectoptes* have their life cycles are all -?

Answer 28

Entirely on the host

Question 29

What pathogenesis is associated with *Knemidectoptes* mites?

Answer 29

Inflammation, keratinization, lameness, and malformation of the feet

Question 30

Non-burrowing mite *Chorioptes bovis* is associated with large and small ruminants and equids, and can be identified by their -?

Answer 30

Rounded mouthparts, sucker shape at the end of their stalks

Question 31

What pathogenesis is associated with *Chorioptes bovis*?

Answer 31

Damaging hides, in late winters they produce mild conditions

Question 32

What non-burrowing mite, called the Sheep scab mite, is oval with pointed mouthparts?

Answer 32

*Psoroptes ovis*

Question 33

What does Psoroptes ovis cause?

Answer 33

Scab mange, due to piercing and chewing at epidermal layers, with zones of inflammation with serous exudate that lead to intense pruritis, restlessness, and ragged wool

Question 34

*Psoroptes ovis:* Rapidly spreading over \_\_\_\_\_\_\_\_\_, they will find reservoir areas in non-winter months in the axilla, groin, and pinna.

Answer 34

**Winter**

Question 35

Is *Psoroptes ovis* reportable?

Answer 35

Yes

Question 36

Non-burrowing mite *Otodectes cynotis*, has many hosts, and can be identified by its -?

Answer 36

* Long legs * Suckers * Dark cerumen

Question 37

Found in the \_\_\_\_\_\_, these mites will lead to frequent shaking of the head, as well as dry parchment like waxy material being produced.

Answer 37

**Ears**

Question 38

*Cheyletiella yasguri* is identified with its \_\_\_\_\_\_, palpal claws, and as _________ \_\_\_\_\_\_.

Answer 38

**Waist** **Walking dandruff**

Question 39

What tests can be done for *Cheyletiella yasguri*?

Answer 39

Adhesive tape test