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30 Cards in this Set
- Front
- Back
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lice |
order phthiraptera small, wingless, dorsoventrally flattened ectoparasite with legs modified for clinging to hair or feathers eyes are vestigial or small still considered an insect |
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Mallophaga |
chewing lice large rounded heads on which eyes are reduced or absent distinct mandibulate mouth parts for chewing |
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lice usually feed on |
feed on cutaneous debris, hair or feathers or blood oozing from scratches |
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anoplura sucking lice |
head is small and narrow and elongated lice har piercing mouth parts stylets puncture the skin and blood is sucked into mouth crab like claws on each leg |
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both anoplurans and mallophagans spend |
their entire lives on their hosts |
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lice life cycle |
incomplete metamorphosis eggs are securely cemented to shaft of hair or feathers 3 nymphal instars cycle from egg to egg usually around 304 weeks |
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transfer between host is usually through |
close physical contact between individuals |
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lice are usually unable to survive for more than |
1-2 days off their host and tend to remain with single host throughout their entire lives |
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heavy louse infestation is known as |
pediculosis |
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heavy infestation may be a sign of |
poor general health |
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Menacanthus stramineus |
chicken body louse or yellow body louse most common and destructive louse on poultry |
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menopon gallinae |
shaft louse |
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Damalinia bovicola |
infects herbivores |
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Damalinia ovis |
sheep |
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damalinia bovis |
cattle |
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D. equi |
horse |
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D. caprae |
goats |
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felicola subrostratus |
louse of cats little pathogenic-- importance except in elderly or chronically ill animals |
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Trichodectes canis |
found on domestic dogs can promote intense irritation more common in puppies |
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haematopinus suis |
hog louse occurs in folds of neck and jowl and around the ears |
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Haematopinus asini |
horses more common in cooler climes |
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haematopinus eurysternus |
short nosed cattle louse |
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Linognathus ovillus |
face louse of sheep |
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Linognathus pedalis |
foot louse of sheep |
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linognathus vituli |
long nosed cattle louse found on calves more commonly than adults |
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linognathus setosus |
common and widespread parasite of dogs head and neck |
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Solenopotes capillatus |
little blue cattle louse found i more southern areas -facial areas |
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pthirus pubis |
crab louse |
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pediculus humanis capitus |
human head louse |
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pediculus humanis humanis |
human body louse |
