- bloodsucking lice, more pathogenic - pointed "noses" head < thorax - large - dark blue, depending on amount of blood ingested - slow moving - clasping hair shaft - lice of mammals

Linognathus setosus - ID - LC

- head narrower than thorax, sucking mouthparts - LC similar to trichodectes canis

Linognathus setosus - site of infestation - pathogenesis and lesions

- skin - heavy infestation can cause severe anemia

Linognathus setosus - CS - Dx

- loss of body condition and damage to skin - louse ID

Linognathus vituli - common name: - host:

- long nosed cattle louse - cattle

Insects 4 Flashcards by Crimson Cuppernell

Anoplura

bloodsucking lice, more pathogenic
pointed “noses” head < thorax
large
dark blue, depending on amount of blood ingested
slow moving
clasping hair shaft
lice of mammals

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Linognathus setosus

common name:
host:

dog sucking louse

- dogs

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Linognathus setosus

head narrower than thorax, sucking mouthparts

- LC similar to trichodectes canis

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Linognathus setosus

site of infestation
pathogenesis and lesions

skin

- heavy infestation can cause severe anemia

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Linognathus setosus

loss of body condition and damage to skin

- louse ID

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Linognathus setosus

-Tx & prevention

avoid direct contact w/ brushes, combs & blankets

- MCL

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Linognathus vituli

common name:
host:

long nosed cattle louse

- cattle

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Linognathus vituli

-LC

-gregarious, forms dense isolated clusters

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Linognathus vituli

-site of infestation

-dewlap, head, neck

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Linognathus vituli

-pathogenesis, lesions, CS

heavy infestations can lead to pruritus, anemia and weakness
often sign of malnutrition or chronic dz

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Linognathus vituli

-Tx & prevention

various extoparasiticides

- MCLs

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Linognathus pedalis
Linognathus ovillus
-host

sheep and goat

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Linognathus pedalis
Linognathus ovillus
-ID

-slow moving, blood sucking mouthparts, tan to bluish black in color

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Linognathus pedalis
Linognathus ovillus
-site of infestation

Linognathus pedalis: inhabits the lower region of hind limbs, scrotum, belly
Linognathus ovillus: occurs on the face, ears, cheeks, neck, body of heavy wool breeds

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Linognathus pedalis
Linognathus ovillus
-pathogenesis, lesions & CS

anemia

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Solenopotes capillatus

common name
host
predilection site:

little blue cattle louse
cattle
neck, head, shoulders, dewlap, back & tail

Solenopotes capillatus

bluish, smallest anopluran louse on cattle

- louse ID

Haematopinus eurysternus

common name
host
ID

short nosed cattle louse
cattle
anopluran, largest louse genus of domestic mammals

Haematopinus eurysternus

-site of infestation

gregarious
form isloated dense clusters
head, ears, eyes, nostrils

Haematopinus eurysternus

-pathogenesis, lesions, CS

serious anemia, weight loss

Haematopinus eurysternus

ID louse
various ectoparasiticides
MCLs

Haematopinus suis

common name
host

sucking louse of swine

- pigs

Haematopinus suis

-site of infestation

-skin, folds of neck and jowl, flanks, insides of legs

Haematopinus suis

-pathogenesis & lesions & CS

heavy infestation leads to restlessness which can result in a drop in production
anemia seen, but rare
skin damage from scratching reduces values of hides

Haematopinus suis - Dx - Tx & prevention

- ID louse | - Macrocyclic lactones effective

Ctenocephalides felis - host - ID

- dogs & cats - Egg: oval, pearly white - Larva: worm like - Pupa: color varies - Adult: dark brown, wingless

Ctenocephalides felis] | -site of infestation

skin, back, ventral abdomen, inner thighs

Ctenocephalides felis | -pathogenesis, lesions/CS:

- flea bite allergy or Flea Allergy Dermatitis (FAD) | - Vectors of a wide range of parasitic and infectious agents

Ctenocephalides felis | -Dx

-fleas, flea feces, blood on host and in bedding

Ctenocephalides felis | -Tx & prevention

- requires breaking life cycle in several places - insecticides help, but they do not treat all stages of life cycle - sentinel, revolution, frontline, capstar

Ctenocephalides felis | -environmental control

- vacuum cleaner indispensable for reducing all stages; vacuum frequently where your pet "hangs out" - mow lawn and rake clippings/leaves - allow treated pet to roam - foggers, dusting powders, sprays

Ctenocephalides canis - common name - host

- dog flea - dogs, cats, rabbits, rats, foxes, HUMANS - very similar to C. felis

Echidnophaga - common name - host - ID

- sticktight flea - domestic and wild fowl - distinctive blunt head, brown-black

Echidnophaga - site of infestation - pathogenesis & lesions/CS - Dx

- usually head, comb, wattles, eyes - irritation, blood loss, anemia - ID flea

Cimex - host - ID

- nesting birds, humans, bats | - mouthparts are beak-like; designed for piercing and bloodsucking

Cimex - LC - Site of infestation

- Eggs -> nymphs - molt 5 times -> adults - Hide in crevices by day, feed on hosts at night - survive > 5 months w/o bloodmeal - skin

Cimex - Pathogenesis & lesions/CS - Dx

- bloodsuckers - allergic rxn to bites - massive infestation can lead to blood loss - ID bug