1. SUCKING LICE: bloodmeal head of louse oesophagus prestomum
LICE AND FLEAS FEEDING MECHANISMS OF LICE (1)
SUCKING LICE:
dermis with
capillary loops
prestomal teeth
grip epidermis
bloodmeal
oesophagus
stylets
head of louse
prestomum

2. CHEWING LICE: mandibles on head fit round hair shaft and chew at skin
LICE AND FLEAS FEEDING MECHANISMS OF LICE (2)
CHEWING LICE:
mandibles on head
fit round hair shaft
and chew at skin
and hair dander
body of louse
hair shaft

3. eggs larva nymphs adult
LICE AND FLEAS LIFE CYCLE OF LICE
hair
eggs larva nymphs adult
contagious spread between hosts in close contact
all stages on single
host simultaneously
[metamorphosis
is incomplete]

4. [metamorphosis is complete]
LICE AND FLEAS FLEA LIFE CYCLE
other host species
adult on host, deposits
eggs and blood pellets
immature stages in
carpet, bedding etc
egg larva pupa adult
[metamorphosis is complete]