Flies Flashcards

1
Q

What are the two important Musca species?

A

Musca domestica (housefly) and Musca autmnalis (face fly)

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2
Q

What is a nuisance fly?

A

They don’t bite, just cause irritation.

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3
Q

What kind of flies are Musca species?

A

Nuisance flies.

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4
Q

What are the main nuisance flies of veterinary importance?

A

Musca species (domestica and autumnalis), Hydrotaea irritans

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5
Q

What is the lifecycle of the Musca species?

A

Eggs laid on fresh or rotting manure, 12 day cycle. They can hibernate over winter.

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6
Q

What is Hydrotea Irritans better known as?

A

Head fly

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7
Q

What is the life cycle of Hydrotea Irritans ‘Head Fly’?

A

Eggs laid in decaying vegetation. One generation per year.

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8
Q

What is Stomoxy Calcitrans better known as? It it a biting or a nuisance fly?

A

Stable fly, it is a visiting biting fly.

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9
Q

What is the lifecycle of Stomoxy Calcitrans ‘Stable Fly’?

A

Eggs laid in rotting hay or straw. 1 month lifecycle.

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10
Q

What are Hippobosca spp. better known as? What is the most important species in the UK? Is it a biting or a nuisance fly?

A

Forest flies. Most important in horses is H. equina. It is a biting fly.

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11
Q

What do Forest flies look like?

A

Medium sized, reddish brown with yellow spots. Reduced wings (veins crowded in one place).

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12
Q

What is the lifecycle of Forest flies?

A

Roughly one year. Adults around May-October.

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13
Q

What are the Sandfly genera’s of importance? Are they biting or nuisance flies?

A

Phlebotomus and Lutzomyia. Both found in tropics. They are biting flies.

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14
Q

What do Sandflies look like? What is their lifecycle?

A

They look like mini mosquitoes. Hairs on wings. Eggs laid in cracks on floor, lifecycle takes about 6 weeks.

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15
Q

What is the main pathogenic significance of Sand flies (Lutzomyia)?

A

They spread Leishmania.

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16
Q

What is the most important genus of Midges of veterinary importance? Are they biting or nuisance flies? What do they look like?

A

Cullicoides, they are biting flies. Small, dark coloured with humped back and mottled wings.

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17
Q

What is the lifecycle of Cullicoides Midges?

A

Eggs laid on plants near water. Lifecycle takes 6-12 months in cooler countries, but can be 1 month in tropics.

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18
Q

What is the main pathogenic significance of Cullicoides midges?

A

“Sweet Itch” (allergic dermatitis), Vector for blue tongue, AHS, SBV

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19
Q

What are the 3 important genera of Mosquitoes? Are they biting flies or nuisance flies? What do they look like?

A

Culex, Aedes, and Anopheles. They are biting flies, that are small with a slender body and long legs. Narrow wings with fringed scales.

20
Q

What diseases can Mosquitoes spread?

A

Arboviruses, canine heartworm, avian malaria.

21
Q

What are the Tabanidae family better known as? Are they bititng flies or nuisance flies? What are the 3 most important genera?

A

Biting flies better known as Horse flies. Three genera of importance are: Tabanus, Chrysops, Haematopota.

22
Q

What is important in the recognition of horse flies?

A

Notifiable wing venation - closed discal cell.

23
Q

What is the lifecycle of Horse flies?

A

Eggs laid on leaves over water, Larvae drop into water. 1 generation a year.

24
Q

What is the Black fly (Buffalo Gnat) family? What is the most important genera? Are they biting flies or nuisance flies?

A

Simulidae are biting flies. Most important genera is Simulian.

25
Q

How do you recognise Black flies? What is their lifecycle?

A

Small, hump backed, short hairless antenae. Eggs laid on plants/stones under flowing water. Lifecycle is 1 month.

26
Q

What is Haematobia Irritans better known as? It is a biting fly or a nuisance fly? What species does it usually affect?

A

Horn flies are resident biting flies. Usually rest on the back and shoulders of cattle, and feed on belly/udder.

27
Q

Where are Tsetse flies found? What is the important genus? Are they biting flies or nuisance flies? How can you recognise them?

A

Found in Africa. Important genus is Glossina. They are biting flies, with a ‘butchers cleaver’ wing venation.

28
Q

What is the lifecycle of Tsetse flies? What diseases do they spread?

A

Life cycle is 2 months, egg ruptures in repro tract. They transmit Trypanosomes e.g. Nagana.

29
Q

What is Melophagus ovinus better known as? How can you recognise it? Is it a biting fly or a nuisance fly?

A

Sheep ked. They are wingless, brown flies. It is a biting fly.

30
Q

What is the lifecycle of Melophagus species?

A

Spend whole time on the sheep. Adult ked can live off sheep up to a week.

31
Q

What is Myiasis?

A

Myiasis is parasitism of living animals by dipteran larvae.

32
Q

What flies cause cutaneous Myiasis?

A

Blow flies

33
Q

What flies cause Nasal Myiasis?

A

Sheep nasal bot flies.

34
Q

What flies cause somatic Myiasis?

A

Warble flies.

35
Q

What are the Hypoderma species better known as? What are the 2 important species? What is their host?

A

Warble flies. Two species are H. bovis and H. Lineatum. They are both found in cattle (eradicated in the UK)

36
Q

How do you recognise warble flies?

A

Large, look like bumblebees, with ONE SET OF WINGS.

37
Q

What is the lifecycle of both H. bovis and H. lineatum?

A

Egg deposited on hair shaft, larva enters through hair follicle or wound. Enters winter resting site (dif for species), makes its way to subcutis of back, pupate and fall to ground. One gen per year.

38
Q

Where are the winter resting sites of H.bovis and H.lineatum? When are they in winter resting sites?

A

H.bovis = Epidural fat
H. lineatum = Wall of oesophagus
November to March.

39
Q

What are the current methods for control of warble flies?

A

Oraganophosphates (OP), Avermectins and Milbemycins.

40
Q

Why when treating warble flies with Organophosphates is it important to treat before or after they are in winter resting sites?

A

If they rupture in Winter resting sites, they release Toxins that can be deadly.

41
Q

What is the Calliphoridae family better known as? What genus/species are most important? (3)

A

Blow flies. Lucilia sericata = Green bottle
Calliphora erythrocephala = Blue bottle
Phormia terra-novae = Black bottle

42
Q

What disease are blow flies responsible for?

A

Blow fly strike. Damage is caused by adult, very common in the UK.

43
Q

What is the lifecycle of Blowflies?

A

Eggs in wounds or on soiled fleece, Larvae crawl into skin and feed, pupae fall to ground. 4 generations May to Sep.

44
Q

What Primary blow flies? Give an example.

A

Flies that initiate strike (can penetrate skin) e.g. Lucilia, Phormia.

45
Q

What are Secondary blow flies? Give an example.

A

Usually attack an area already struck or damaged. e.g. Calliphora.

46
Q

What are Tertiary blow flies?

A

Flies that only infect dry lesions on carcasses.

47
Q

What are Chrysoma Bezziana better known as? How can you recognise them?

A

Better known as Screw worms. The larva have spines around them, like a screw.