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

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

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]

[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]