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are swallowed and they attach themselves to the mucosa 
of the stomach. 
(b) Genus Hypoderma , e.g., H. lineata. Larvae 
produce ox warbles ( = tumours) in the ox. 
(c) Genus Oestrus , e.g., O. ovis. Larvae in the 
respiratory passages of the sheep. 
(d) Genus Gephalomyia , e.g. C. maculata. In the 
camel. 
(e) Genus Cephenomyia , e.g., C. rufibarbis. In red 
deer. Scotland. 
(/) Genus Dermatobia , e.g., D. cyaniventris. Larva 
is the ‘ ver macaque ’ (America), producing myiasis in 
man and cattle. 
(g) Genus Cordylobia , e.g., C. anthropophaga. 
Larva is the ‘ ver de Cayor 5 (Senegal), producing 
myiasis in man. 
Myiasis is common in Africa and in the tropics, 
but the larvae have been identified in but few instances 
as yet. 
The fourth group, the Pupipara (to which 
Glossina also belongs, from the point of view of its life 
history), comprises :— 
i. Hippoboscidae (spider flies). 
They run rapidly over the body, hiding in 
hair or feathers. Head circular. No distinct neck. 
Clypeus distinct, separated from the head by a 
curved suture. Antennae lie in cavities in its 
anterior angle. Antennae: one segment with or 
without a style (arista). Palpi absent. Abdomen 
leathery, capable of much distension in 2 . Tarsi : 
fifth segment longest with two or three claws. 
Empodia ( between the claws) distinct. Wings large, 
or mere strips, or absent. 
(a) Genus Hippobosca. —Wings large, obtuse. No 
