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RUSVM Parasit SPR 2020 > INSECTS: Diptera - Muscidae and Ceratopogonidae,spp. > Flashcards

INSECTS: Diptera - Muscidae and Ceratopogonidae,spp. Flashcards

1
Q

What are some common characteristics shared by insects?

A
  • Jointed limbs
  • Segmented bodies (head, thorax, abdomen)
  • Exoskeleton
  • 3 pairs of legs
  • Antennae
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2
Q

What is the life cycle for Diptera spp.?

A

Egg - Larva - Pupa - Adult

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3
Q

Define myiasis, or fly strike.

A

An infestation of the body of a live animal by fly larvae that grow inside the host while feeding on its tissue

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4
Q

What are instars?

A

Larvae

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5
Q

Do flies and flea have the same life cycle?

A

Yes, Egg - Larva - Pupa - Adult

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6
Q

True or False: Fleas, unlike lice, are host specific, and specific for their areas of infection.

A

False, lice are both host and site specific

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7
Q

What life cycle do lice have?

A

Egg - Nymph (any number) - Adult

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8
Q

What suborder of lice is also known as the sucking lice, moving slowly, and have a narrower head than their thorax?

A

Anoplura spp.

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9
Q

What suborder of lice are associated with feeding on the skin surface, moveing fast, and having a head wider than their thorax?

A

Ischnocera (Mallophaga) spp.

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10
Q

What is the common name for Musca domestica? Who are there preferred hosts?

A

House fly

Animals and humans

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11
Q

While there are stickly hairs on the pads of their legs, how are mouthparts of M. domestica adapated?

A

For sponging

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12
Q

Where do adult female M. domestica flies lay their eggs?

A

Any number of deaying organic materials

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13
Q

What is the common name for Musca autumnalis? What sites are commonly infected?

A

Face fly

Animal secretions and wounds

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14
Q

What Diptera spp. is associated with being a biological vector D. megastoma and Habronema, involved with summer sores?

A

Musca autumnalis

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15
Q

What can results from M. autumnalis infestations?

A
  • Annoyance; interfere with grazing or drop in performance
  • Eye disorders, conjunctivitis
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16
Q

What is the common name for Stomoxys calcitrans? Who are there preffered hosts?

A

Stable fly, house fly

Animals and Humans

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17
Q

What is different in the mouthparts of S. calcitrans, compated to M.. domestica?

A

S. calcitrans mouthparts are rigid, and forward projecting, sitting on walls of their head

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18
Q

What is different about S. calcitrans, when it comes to their meal consumption?

A

Rather that sucking mouthparts, they use theirs for blood sucking (taking up to 3 mins to complete their blood meal)

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19
Q

Female S. calcitrans adults will lay their eggs -?

A

On decaying matter

20
Q

What pathogenesis is associated with S. calcitrans infestations?

A

Attacking animals, and transmitting disease organisms

21
Q

What clinical signs are associated with S. calcitrans infestations?

A
  • Increased head and tail movements
  • Skin twitches
  • Tail swishes
22
Q

Which of the following is not associated with treatment and prevention of S. calcitrans and M. autumnalis?

A) Insecticides
B) Screens
C) Sanitation
D) Treating compost

A

D) Treating compost

23
Q

What is the common name for Haemotobia irritans? Who are there preffered hosts?

A

Horn fly

Cattle

24
Q

True or False: H. irritans, which is the largest bloodsucking muscid, can be distinguished from the S. calcitrans by its size and proboscis,

A

False, H. irritans is the smallest bloodsucking muscid, and as such, will have a shorter probocis and body size

25
Q

Adult female H. irritans will remain on hosts, and leave only to -?

A

Lay their eggs in fresh feces

26
Q

H. irritans is associated with diapause. What does this mean?

A

H. irritans pupa will go through a period of suspended developments during unfavorable environmental conditions (overwinter)

27
Q

What sites of infestation are associated with H. irritans?

A
  • Back (when swarming)
  • Abdomen (when raining)
  • Horns (when not feeding)
28
Q

What pathogenesis is asociated with H. irritans infestations?

A

Due to feeding in the thousands, they can cause:

  • Intense irritation
  • Impaired weight gain
  • Loss of prod.
  • Vector transmission
29
Q

True or False: H. irritans is associated with insecticide resistance.

A

True

30
Q

What is the common name for Culicoides spp.? Who are there preffered hosts?

A

Biting midges

Animals and Humans

31
Q

What identifying characteristics can be associated with Culicoides spp.?

A
  • Mottled wings
  • Short, piercing proboscis
  • Long slender antennae
32
Q

What pathogenesis is associated with Culicoides spp. infections?

A

General annoyance, vector transmission of O. cervicalis and other pathogens

33
Q

What clinical signs are associated with Culicoides spp. infestations?

A

Pain inflicted, and allergic reactions to horses

34
Q

What can be done for treatment and prevention of Culicoides spp. infestations?

A
  • Treat horses with insecticides or repellants
  • Avoid and decrease standing water (marshes, swamp, etc.)
35
Q

What is the common name for Tabanus spp.? Who are the hosts?

A

Horse fly

Large animals, people, small mammals, and birds

36
Q

What is associated with the mouthparts of the horse fly, or Tabanus spp.?

A

Mouthparts for slashing and sponging

37
Q

What is the common name for Chrysops spp.?

A

Deer fly

38
Q

What can be used for identification of deer flies, or Chyrsops spp.?

A
  • Elongated antennae
  • Dark bands across wings
  • Bites in shaded areas
39
Q

Is prevention possible with Chrysops infestations?

A

While difficult to control, as a result of breeding sites being diffuse and hard to detect, but repellens and insecticides can be used

40
Q

Who are the hosts for Melaphongus ovinus?

A

Sheep

41
Q

While dorsally flattened and hairy, they also have blood sucking mouthparts. Melaphogus ovinus is also known for not having -?

A

Wings

42
Q

How many eggs can an adult female M. ovinus produce?

A

A single egg, or 1

43
Q

What is the life cycle of M. ovinus?

A

Adult females produce an egg that hatches in their bodies, and larvae produced then attach to wool or hair, until they become adults.

44
Q

What is the common name for Melaphogus ovinus?

A

Sheep ked, or sheep tick

45
Q

What is the common name for Cilicidae spp?

A

Mosquitoes

46
Q

True or False: Mosquitoes belong to a number of generea, and their larvae develop in water.

A

True

47
Q

What maggots are associated with cutaneous myiasis, or fly strike?

A
  • Calliphoridae =* Old and New World screwworm, aka Blow flies
  • Sarcophagidae* = Flesh flies

RUSVM Parasit SPR 2020 (25 decks)

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