Acari (Arachnids) Flashcards
1
Q
Ixodes spp.
A
- Black-legged tick or deer tick
- All mammals and birds, and humans
- Long palps, inornate, anal groove anterior to anus
- Three host tick
- Axilla, inguinal region, face and ears
- Transmit Lyme disease
2
Q
Dermacentor spp.
A
- Most common tick on dogs in most of North America
- Human
- Rectangular basis capituli, short palps, ornate, festoons
- Three host tick
- Skin around head and neck
- Transmit RMSF, cytauxzoonosis
3
Q
Rhipicephalus sanguines
A
- Brown dog tick or kennel tick
- Dogs and humans
- Hexagonal basis capituli, short palps, festoons
- Three host tick
- Adapted extremely well to indoor living
- Adults: skin between toes and ears
- Transmits Babesia canis and Ehrlichia canis
4
Q
Rhipicephalus (Boophilus) spp.
A
- R.annulatus: cattle fever tick
- R. microplus: tropical cattle tick
- Cattle, other large hosts
- One host tick
- Transmit bovine piroplasmosis and gallsickness
- Reportable
5
Q
Amblyomma spp.
A
- Lone star tick, Gulf Coast tick
- Humans, livestock, dogs, cats
- Long palps, ornate scutum, banded legs
- Three host tick
- Painful bites
- Transmit Hepatozoon americanum, Cytauxzoonfelis
6
Q
Otobius spp.
A
- Spinose ear tick
- Livestock, humans, dogs
- Integument short sharp spines
- Adults are not on the animal and do not feed
- Ear canals affected
7
Q
Argas spp.
A
- Fowltick
- Domesticandwildfowl
- Softtick
- Survivearidconditions
- Notonhostsmostoftime
8
Q
Sarcoptes scabiei
A
- Sarcoptic mange mite, itch mite, scabies mite
- All domestic animals (Dogs, Pigs, Cattle) and humans
- Reportable in cattle
- Round, legs short, Burrowing mite
- Skin, Base of tail (Cattle), Ears (Pigs)
- Erythema, scale, and crust formation
- Diagnosis: Skin scraping, Dogs, Cattle), Ear wax (Pigs)
- Treatment: MCLs, Sow treatment
9
Q
Notoedres cati
A
- Noteodric cat mite
- Cat, occasionally dog or rabbit
- Head, Burrowing mite
- Smaller than Sarcoptes scabiei
10
Q
Knemidocoptes spp.
A
- Scaly leg mite; Scaly face mite
- Chickens and turkeys; Cage birds
- Under scales of leg, comb, wattles, neck, Burrowing mite
- Lameness, malformation
11
Q
Chorioptes bovis
A
- Cattle, small ruminants, equids
- Rounded mouthparts
- Tailhead, udder and legs, Non-burrowing mite
12
Q
Psoroptes ovis
A
- Sheep scab mite
- Sheep, cattle
- Oval, with pointed mouthparts
- Non-winter months in axilla, groin, inner surface of the pinna, Non-burrowing mite
- Causes “scab” mange
- Reportable
13
Q
Otodectes cynotis
A
- Ear mite
- Dogs, cats, ferrets, foxes, humans
- “Coffee ground” exudate
- Frequent shaking of head
14
Q
Cheyletiella yasguri
A
- Dogs, humans
- “walking dandruff” and palpal claws
- Dandruff, adhesive tape
15
Q
Demodex canis
A
- Demodectic mange mite, follicle mite
- Dogs
- “Cigars with legs”
- Transmission from bitch to newborns
- Localized demodicosis-young animals, good prognosis
- Generalized demodicosis- “red mange”, very difficult to cure
