The Distribution of the Yellow Fever Mosquito 
(Stegomyia fasciata FABRICIUS) and general notes 
on its bionomics, 
by-BRED? V7 THEOBALD, M AL E: E. Sete. 
The theory instituted by FINLAY, that the Tiger, Brindled, 
Spotted Day or Striped Mosquito, then known as Culex tentatus, 
was the carrier of yellow fever, has now become a proven fact. 
The importance of this insect has in consequence become very 
great. 
The Stegomyia fasciata (pl. V) of FABRICIUS is the type of a new 
genus which I created in 1901. Its structural and bionomical 
features differing very much from true Culex. 
The main characters are the flat cephalic and scutellar scales, 
which alone will separate the genus from other allied Culicine 
groups. The insect is a very marked one, and at present there is no 
known species with which it can be confused. The peculiar thoracic 
adornment, together with the leg and abdominal banding, will at 
once identify this insect. 
The synonymy has already been referred to (« Monograph of 
Culicidae of the World », vol. I, III, IV and V, 1901-1910). 
One point only in this paper need be mentioned, namely, the 
reasons I have retained FABRICIUS’s name fasciata. Firstly, 
because medical men over most of the world now know the insect 
by this name, and any alteration seems to me under such circum- 
stances to be likely to lead to needless confusion. Secondly, there is 
a possibility that MEIGEN's Culex calopus described from Portugal 
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