Oriental Rat Flea Parasite of many mammalian species, including Rattus and humans Conspicious row of bristles along the near margin of the head and stout ocular bristle in front of the eye No genal and pronotal comb

it is for host detection and immediate initiation of escape response

FLEAS IS ORDER __________

European Chicken Flea

Northern Rat Flea

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Common Flea of Ground Squirrel

Common transmitter of different parasites

- Found in the ears of rabbits - Front of the head is more rounded It cause: • ________ or (Poxvirus) Fatal Cause nodule formation/myxoma

Pads of rubbery protein in pleural arches where energy is stored

Characteristics (Fleas) • Wingless, _________ compressed and heavily chitinized • _________ parasites (they live on host’s nests) - Are permanent parasites except for egg and larva; removed and go to the nest of the host • _________ - structures found either ventral margin of head or posterior margin of prothorax - Importance: prevents dislodgement of flea from the hair or feather of the host - 2 types: ______________ - located on ventral margin of head ______________ - located on posterior margin of prothorax

- Common Eastern Rabbit Flea - Found in face and neck of domestic animals

Human flea Affects man and other animals No genal and pronotal comb Only one setae behind the antenna

_________ - structure used to penetrate the skin of the host _________ - sensory detection

Cat flea • Can attack canine but more common feline Female - Head 2x as long as the height; pointed anteriorly Male - Head is as long as wide; slightly elongated

3rd leg pair is most developed - important for jumping

Dog flea - Morphologically similar to felis felis - Cannot interbred / incapable of mating

Sand flea, Jigger Smallest known flea No genal and pronotal comb Head angular; has an acute frontal angle ________ - ability to produce cuticle without molting Affects humans

^Antenna - 3 segments, located in a groove called ___________ (at the lateral of the head). Antenna is embedded to prevent damage as the flea moves through the hair of the host

Western Chicken Flea No genal ctenidia Has pronotal ctenidia

Hedgehog Flea Genal comb - 1-3 spines Pronotal - 1 short spine

• Brushes of hair located before or on top of the sensilium • Aids in sensory function of sensilium

European Mouse Flea Host: mouse mouse (Mus musculus)

How high does fleas jumps? ^Vertically - up to ___ inches ^Horizontally - up to ___ inches

- Stick Tight Flea - Burrowing (dig on the skin of the host to attach securely and prevent dislodging) lea of domestic poultry - May attack other animals such as horse, cattle, dog, rat - 2 setae behind the antenna - No genal and pronotal comb