The head louse Pediculus capitis infests the head of humans and the eggs laid on the hair are known as nits. The body louse Pediculus humanus infests the clothing of humans, particularly those unable to change their clothing.They do not...
Psoroptes ovis. Wool loss characteristic of sheep scab. Psorptes ovis causes a highly contagious disease of sheep and cattle.In sheep, lesions may occur on any part of the body but in badly affected animals they are most obvious on the sides. Psoroptes cuniculi. Ear psoroptic mange of rabbit. The...
Sarcoptes scabiei is recognized by the characteristic oval, ventrally flattened, and dorsally convex tortoise-like body, stout dorsal setae, numerous cuticular spines, and transversely ridged cuticular striations. Females have suckers on...
Leg suckers have a short pedicel without segments. Female in phase-contrast microscopy. Females have suckers on legs 1, 2 and 4.The fourth legs are long, those of the male are short. Chorioptes mites, which are surface-inhabiting parasites found principally on the feet of domesticated animals...
Adults horn flies appear very similar to stable flies, but are only about half the size. In feeding, the fly characteristically orients its head downward in contrast to the stable fly which usually directs its head upward. 44 kb Female. The horn fly, Haematobia irritans, found on the backs of...
These flies are often known as keds or hippoboscids. They are medium sized wingless flies with the head not distinct from the thorax. The eyes are inconspicuous and the body covered with bristles and setae. They are not typical cyclorrhaphan flies because of the adaptations of the adults to an...
Cochliomyia hominivorax, is an obligate ectoparasite and will infest almost all warm-blooded livestock, wildlife and humans; it is unable to breed in carrion. These bluish to bluish-green flies have three prominent longitudinal black stripes on the thorax. Female, lateral view. The face and the...
The cosmopolitan chicken mite, also known as the red mite, is a blood feeder of poultry but is on the birds only during the periods of feeding which are mostly at night. Anal plate The anal plate is a broad shield. Mites resting on waterer. When not feeding, the mite are hidden in the cracks and...
Mite predators of fly eggs and first-instar larvae are mainly species of the families Macrochelidae, Uropodidae and Parasitidae. As the manure accumulates and ages, these predatory mites exert some biological control. The macrochelid mites are better known and are frequently extremely abundant in...
Adult dog biting lice are small, averaging approximately 1 mm in length, and relatively broad. Large populations may cause considerable irritation to dogs, especially pups. The lice can serve as intermediate host of the tapeworm Dipylidium...