Flies

Question 1

What are the orders of flies?

Answer 1

Trichoptera
Diptera

Question 2

Life cycles of flies

Answer 2

Egg —> larva —> pupa —> adult

Question 3

General characteristics of Trichoptera

Answer 3

2 pairs of wings
3 pairs of legs
Distinct head, thorax, abdomen

Question 4

How does Trichoptera interact with water?

Answer 4

Flies lay eggs near water
Larvae are aquatic

Question 5

What are a species of trichoptera flies?

Answer 5

Caddisflies

Question 6

How are Caddisflies vectors?

Answer 6

Neorickettsia ristici is a vector of Potomac Horse Fever

Question 7

What are the general characteristics of Diptera?

Answer 7

1 pair of wings
3 pairs of legs
1 pair of compound eyes
Distinct head, thorax, and abdomen

Question 8

How are the mouthparts of Diptera.

Answer 8

Piercing, lapping (sponging)m, combination, or non-functional

Question 9

T/F: metamorphosis is complete in Diptera flies

Answer 9

TRUE

Question 10

Where do flies lay eggs on?

Answer 10

Host
Water
Decaying organic marterial
Hairs
Open wounds on skin

Question 11

In Diptera, what are the 3 main groups of flies?

Answer 11

Nematocera
Brachycera
Cyclorrapha

Question 12

Nematocera

Answer 12

Culicidae (mosquitos)
Simulidae (black flies)
Ceratopogonidae (midges)
Psychodidae (Sandflies)

Question 13

Brachycera

Answer 13

Tabanidae (horseflies and deer flies)

Question 14

Cyclorrapha

Answer 14

Muscidae (houseflies)
Hippoboscidae (keds)
Sarcophagidae (flesh flies)
Calliphoridae (blowflies)
Oestridae (botflies)

Question 15

Diptera flies as vectors

Answer 15

Some of these flies are important vectors:
Sandflies transmitting leishmania
Mosquito: transmitting dirofilaria

Question 16

Myiasis- producing flies

Answer 16

Myiasis is the infestation of the organs and tissues of man or animals by fly maggots (larvae)
Any feed on living tissue or dead/necrotic tissue

Question 17

Obligatory Myiasis

Answer 17

Dependent upon host, at least for a certain period of its life

Question 18

Facultative myasis

Answer 18

Free- living maggots that adapt themselves to parasitic existence

Question 19

Bot flies in horses

Answer 19

Gasterophilus intestinalis Gasterophilus hemorrhoidalis (legs)
Gasterophilus nasalis (throat)

Question 20

Bot flies in Cattle

Answer 20

Hypoderma bovis
Hypoderma lineatum

Question 21

Bot flies in Ovine/Caprine

Answer 21

Oestrus ovis

Question 22

Bot flies in rabbits

Answer 22

Cuterebra

Question 23

Bot flies in deer

Answer 23

Cephenemiya

Question 24

What are 5 general characteristics of bot flies in cattle and horses?

Answer 24

Nonfunctional mouth parts
Adults are bee-like and short-lived
Larvae located within the host
Pupa located beneath surface of the ground

Question 25

Gasterophilus intestinalis distribution, common name, and egg location

Answer 25

Common horse bot Throughout U.S. Eggs on forelimbs and shoulders

Question 26

Gasterophilus intestinalis larvae

Answer 26

L1 and L2 larvae migrate through tongue and interdental spaces L3 larvae in stomach (margo plicatus)

Question 27

Gasterophilus nasalis distribution, common name, and egg location

Answer 27

Throat bot Rocky Mountain area of US Under intermandibular region

Question 28

Gasterophilus nasalis larvae

Answer 28

L1 and L2 larvae are in gum L3 larva in ampulla of duodenum

Question 29

Gasterophilus hemorrhoidalis distribution, common name, and egg location

Answer 29

Nose bot Northern part of the US to VA around the hairs of the lips

Question 30

Gasterophilus hemorrhoidalis larvae

Answer 30

L1 and L2 in mouth L3 larvae I’m stomach and reattach in the rectum

Question 31

General pathogenesis of Gasterophilus

Answer 31

Inflammatory reaction as larvae migrate Irritation at the site of attachment May cause colic Flies annoy host

Question 32

Diagnosis of Gasterophilus

Answer 32

Finding eggs on the hairs of forelimbs, shoulders, lips, nasal and Mandibular area Finding L3 larvae in feces Endoscopy

Question 33

Treatment of Gasterophilus

Answer 33

Macrocyclic lactones Removal of eggs (fine tooth comb, grooming stone)

Question 34

Hypoderma lineatum

Answer 34

Common name: common cattle grub Distribution: universal Location of eggs: hair on legs of cattle Larvae: L1 in esophagus, L2 and L3 in subcutaneous tissue of back

Question 35

General pathogenesis of Hypoderma

Answer 35

Inflammatory reaction as larvae migrate Irritation at the site of migration Ataxia, paralysis Bloating (esophagus) Damage to the hide Flies annoy the host, causing gadding

Question 36

Hypoderma diagnosis

Answer 36

Finding eggs on the hairs of the limbs Finding warbles in the back

Question 37

Treatment for Hypoderma

Answer 37

Macrocyclic lactones

Question 38

Genera characteristics of bot flies in sheep/ goats

Answer 38

Nonfunctional mouth parts Short-lived Larvae located within the host Pupa located beneath surface of the ground

Question 39

General pathogenesis of oestrus ovis

Answer 39

Irritation of nasal passages Nasal discharge Erosion of nasal bones Migrate to brain Suffocation False gid (head pressing)

Question 40

Diagnosis of oestrus ovis

Answer 40

Finding larvae in nostrils

Question 41

Treatment of oestrus ovis

Answer 41

macrocyclic lactones