The Muscidce 
117 
Muscidae 
The following Muscidae, characterized elsewhere, deserve special 
mention under our present grouping of parasitic species. Other 
important species will be considered as facultative para¬ 
sites. 
Stomoxys calcitrans, the stable-fly, or the biting house¬ 
fly, is often confused with Musca domestica and therefore 
is discussed especially in our consideration of the latter 
species as an accidental carrier of disease. Its possible 
relation to the spread of infantile paralysis is also con¬ 
sidered later. 
The tsetse flies, belonging to the genus Glossina, are 
African species of blood-sucking Muscidae which have 
attracted much attention because of their role in trans- 
8.5 L arva of mitting various trypanosome diseases of man and animals. 
oil' 13 ' After They are characterized in Chapter XII and are also 
Smith am ’ di scusse d in connection with the diseases which they 
convey. 
Chrysomyia macellaria, (= Compsomyia ), the “screw worm”-fly 
is one of the most important species of flies directly affecting man, 
in North America. It is not normally parasitic, however, and hence 
will be considered witlC other facultative parasites in Chapter IV. 
Auchmeromyia lute- 
ola, the Congo floor 
maggot. This is a 
muscid of grewsome 
habits, which has a wide 
distribution throughout 
Africa. The fly (fig. 86) 
deposits its eggs on the 
ground of the huts of the 
natives. The whitish 
larvae (fig. 85) on hatch¬ 
ing are slightly flat¬ 
tened ventrally, and 
each segment bears 
posteriorly three foot¬ 
pads transversely arranged. At night the larvae find their way into the 
low beds or couches of the natives and suck their blood. The adult 
flies do not bite man and, as far as known, the larvae do not play any 
role in the transmission of sleeping sickness or other diseases. 
86. Auchmeromyia luteola (X4). After Graham-Smith. 
