31 



Simulium griseicollis, Becker. 



Mitteilungen aits dem Zoologischen Museuin in Berlin, \\ . lid., .'{. 

 Heft, ]). 7S (1903) : Second Report of the Wellcome Re.smrch 

 Liiboratories <tt the Gordon Memorial College, Khartoum 

 (Kliartoiim : Department of lOducation, Sudan Government, 

 1906), p. 52 [translation, by E. E. Austen, of original description]. 



Plate I., fig. 8. 



Described originally from specimens from Assuan, in Upper Egypt, 

 this small yellowish- or greyish-haired, partially pale-legged Simulium 

 is at certain seasons extremely abundant and troublesome in parts 

 of the Dongola Province, in the Anglo-Egyptian Sudan, where it is 

 locciil\- known as Nimitti* The few specimens at present in the 

 Museum are all from the Dongola Province, and include sixteen 

 examples (unfortunately in a very bad state of preservation) taken 

 in 1905 and forwarded for identification by Dr. Andrew Balfour 

 in 1906, and two females collected in January, 1907 [H. H. King). 

 Mr. King has also kindly presented a number of larva? and pupoe 

 in spirit. 



When forwarding specimens of Simulium griseicollis to Dr. 

 Andrew Balfour in 1905, the Mudir of Berber wTote as followsf : — 

 " It occurs in January, February, March and A})ril. Tt extends from 

 Salamanieh, north of Berya, to the Berti boundary of the Dongola 

 Province on the river. It lives near the river and is not found at 

 a greater distance from it than half a mile. It bites from sunrise to 

 sunset, attacking any part of man or beast unprotected by hair or 

 clothes. Human beings are chiefly bitten on the face and hands, 

 animals in the region of the pudenda. ... It is most virulent 

 between the extreme cold of the winter and the great heat of the 

 summer. The hot weather kills these flies off in thousands, and 



* Dr. Andrew Balfour {Second Report of the Wellcome Research Laboratories at the 

 Gordon Memorial College, Khartoum, p. 34 (Khartoum: Department of Education, 

 Sudan Government, 1906)) writes " Nimetta or Ncmetti." 



f Gf. Balfour, loc. cit. 



