Flies Flashcards
Cow dorsum
Warbles
“Cow grubs”
*Hypoderma bovis (spinal cord migration)
*Hypoderma lineatum (esophageal migration
*Cows»_space; Horses
*Warbles = L3 larvae
*Tx = avermectins
Fly in Africa only. Carries African sleeping sickness from Trypanosomes (“Nagana”)
Tse Tse fly
Glossinia
Genus of Sandfly in New World
Lutzomyia
Genus of Sandfly in Old World
Phlebotomus
Sandfly is the vector for ______
Leishmania
Where do sandflies (Lutzomyia, phlebotomus) reproduce
Decaying organic matter
NOT H2O
What type of infection is Myiasis
Fly larvae disease (bots)
Horse bot
Gasterophilus
Sheep bot
Oestrus ovis
“Sheep nose”
Rodent/rabbit bot
Cuterebra
Hypersensitivity reaction to L3 possible!
Screwworm myiasis
REPORTABLE
*Cochliomyia hominovorax
Likes living tissues
Sheep
Melophagus ovinus
Sheep ked
Entire life ON HOST
*Affects wool
Sheep ked is the vector for _____
Trypanosoma melophagium
Horse
Hippobosca
Horse ked
Likes inguinum, perianal region
Cow Ventral abdomen
Stephanofilaria stilesi
Filaria
Vector: Haematobia irritans
“Horn fly”
What disease does Haematobia irritans (horn fly) carry
Stephanofilaria stilesi
(filaria; ventral midline, cow)
ALSO Corynebacterium pseudotuberculosis
Where do horn flies lay their eggs
Cow manure
Haematobia irritans
Which fly carries Corynebacterium pseudotuberculosis
Haematobia irritans (horn fly)
What time do horn flies feed
Day time
Haematobia irritans
Stable fly
Stomoxys
What is unique about stable flies
Both males and females blood feed
(other flies, just females!)
What disease is this? Vector?
Habronemiasis
“Summer sores”
Vector: Stable fly (Stomoxys) and House fly (Habronema Muscae)
Which flies are responsible for these lesions? What disease is this?
Equine aural plaques
Caused by equine papillomavirus
Vectors: 1) Black fly, Simulium
2) Stable fly, Stomoxys
What time do stable flies feed?
Daytime
Which flies feed at daytime?
*Stable fly (Stomoxys)
*Horse fly (Tabanus)
*Horn fly (Haematobia irritans)
Which fly is a vector for Equine Infectious Anemia (EIA)?
Stable fly (Stomoxys)
T or F: Stable fly (Stomoxys) can be a vector for Trypanosomes
True. (So can Tse Tse fly)
Tabanus other name
Horse fly
Large, piercing mouthparts
Where do horse flies breed
STANDING water (black flies like running water), wet vegetarian
T or F: Tabanus control can be achieved with adding fans to the stable
False. Strong fliers. Fans don’t help enough.
Tabanus (horse flies) are a vector for ______ (4)
*Tularemia
*Anthrax
*Anaplasma
*Bovine leukoemia virus
T or F: Culicoides control can be achieved with adding fans to the stable
True. Weak fliers
Other name for Culicoides
Gnats
No see Ums
What disease is this? Which fly is a vector for this disease
Onchocerca cervicalis
Culicoides, Black fly (Simulium)
Which flies may bite on the ventral midline in horses
*Cuilocoides
*Haematobia irritans (horn fly; umbilical, Stephanofilaria stilesi)
*Stomoxys (Stable fly)
*Tabanas (horse fly)
Which fly is a vector for blue tongue, African Horse Sickness
Culicoides
Which species of Culicoides bites on the ventrum
C obsoletus
C nuberculosis
C schultze
Which species of Culicoides bites on the dorsum
C imicola
C newsteadii
C pulicaris
Which flies are associated with summer itch (3)
Culicoides > horn fly (Haematobia irritans, ventrum), black fly (Simulium, diffuse)
Which breed is predisposed to summer itch
Icelandic ponies
Other name for summer itch
Insect Bite Hypersensitivity
Type of hypersensitivity reaction caused by Summer Itch
Type 1, Type 4
Where do Mosquitos breed? What time do mosquitos feed
Water, dusk
Other name for Black fly
Simulium
Where do Simulium breed
RUNNING water (horse flies like standing water)
What time do Simulium feed
Morning + evening
Simulium is a vector for _____
*EHV aural plaques
*Onchocerca
*EEE
What is the other name for Face Fly
Musca autumnalis
Where do Musca autumnalis breed
Feces, garbage
Musca autumnalis is a vector for _____
Bovine papilloma virus, Thelezia
Other name for House Fly
Musca domestica
Where do Musca domestica breed
Feces, garbage
Musca domestica is a vector for ______
1) Habronema muscae (stomach nematode in horses)
2) Draschia megastoma (stomach nematode in horses)
3) Corynebacterium
T or F: Fans will be very helpful for minimizing Simulium exposure
FALSE. Strong fliers, can fly long distances
Where on the body does Simulium bite
Thinly haired areas
-Face, ears, neck
-Ventrum
-Intermandibular space
-Legs
Treatment for Simulium
Stable during day
Frequent application of repellents
Prednisolone if severe cutaneous reactions
Treatment of Tabanus (horse fly)
Fly sheets (protect truncal feeding)
Stable during the day
Frequent application of repellents
Where on the body do Horse Flies bite
Ventrum, legs, neck, withers
When they stop feeding, blood drops appear at the site. Attracts non-biting insects
Where on the body do Stable Flies bite
Caudal, lateral aspects of front and hindlimbs
CHEST + LEGS
How much time do horn flies spend on their host?
Their ENTIRE adult life
T or F: Hamaetobia irritans requires COW manure for eggs to develop. Eggs laid in horse manure will not develop
True
Where on the body do horn flies bite
Umbilicus!
VENTRAL MIDLINE DERMATITIS
Treatment of Horn flies
Remove cow feces!!
+Daily repellent spray
T or F: Musca are biting flies
False. Feed from wounds or ocular/oral/nasal secretions
Where to horse keds like to feed
Rump, perineum
Which mosquito genus are strong fliers? Which are weak fliers?
Strong: Aedes
Weak: Anopheles/Culex
Differentiating factor for ventral midline dermatitis between Culicoides and Horn flies
Horn flies: discrete lesions
Culicoides: More generalized dermatitis
