94 
BLOOD-SUCKING ARTHROPODA. 
in certain parts of the United States, occasion great losses among 
these animals, besides frequently molesting human beings. In the 
district of South Hungary called the Banat the Columbacz Midge 
(Simulium columbaczense, Schonb.) has been notorious for more than 
a hundred years, owing to the destruction caused by it among cattle. 
Psychodidae, genus Phlebotomus (in the Sudan and Ceylon called 
Sancl-flies). 
In this family the blood sucking habit is altogether exceptional, 
being confined to the genus Phlebotomus* of which only three or 
four species, which occur in Southern Europe, the Mediterranean 
Sub-llegion, the Egyptian Sudan, and Ceylon, are at present known. 
It is probable that the females alone suck blood. 
Appearance. —Small yellowish-brown flies from lj to 2 mm. in 
length, with the body 
and wings densely 
clothed with long hair. 
Antennae, palpi, and 
legs long ; proboscis 
straight, projecting 
vertically beneath the 
head. Abdomen of the 
female roseate when full 
of blood. Care must 
be taken not to con¬ 
fuse with Phlebotomus 
the harmless species 
belonging to other 
genera of Psycho- 
didse, all of which 
are small, densely 
hairy, moth-like flies, 
Fig. 3.— Phlebotomus sp. 5 • Kassala, Sudan, 
(x 12.) 
but with the proboscis scarcely, if at all, visible. 
* Since this was written the Rev. A. E. Eaton has stated that in England 
lie has observed blocd in the abdomen of Syeorax silacca , Hal., and has made 
a similar observation in Algeria in the case of an undescribed species of the 
same genus. Of course the blood may not have been human. 
