176 ENTOMOLOGY FOR MEDICAL OFFICERS 



Glossina pallidipes^ Austen. 



This, according to Austen, is essentially an East African 

 species, its range extending from Zululand to (at least) the 

 northern boundaries of Uganda and British East Africa. It 

 resembles G. longipalpis at all points, except that the 2 

 terminal segments of the tarsi of the front and middle legs 

 are either entirely pale, or may have faint traces of brown at 

 their tips ; whereas in G. longipalpis, as also in G. morsitans 

 and its variety, the tips of the tarsi in question are conspicu- 

 ously dark brown. 



The seven following species are for the most part flies of 

 conspicuously large size. Several of them were for some time 

 confused with G.fusca, Walker. 



Glossina fusca, Walker, Austen. 



The range of the species, according to Austen, extends 

 from Sierra Leone to the Uganda Protectorates, and is not 

 known to include the East African Protectorate or German 

 and Portuguese Africa, or Nyassaland or Rhodesia. Austen's 

 measurements give the length of the male as g-6 to 

 1 1-6 mm., and of the female 10-5 to ii-8 mm. The 

 characteristic thoracic markings {cp. Fig. 68) are distinct; 

 the abdomen is light dirty brown at base, becoming umber- 

 brown distally, and there is no appearance of banding ; the 

 last 2 tarsal segments of the hind legs are dark brown, as 

 are the tips of the same segments of the front and middle 

 legs ; the wings are dusky (" dull sepia-coloured ") ; the hairs 

 of the arista number seventeen to twenty. G. fusca is said 

 to bite at night, not uncommonly. 



Glossina fuscipleuris, Austen. 



Only one specimen is known, from the Eturi Forest 

 in the north-eastern part of the Congo Free State. The 

 species differs from G. fusca in having (i) the pleura "dark 

 grey instead of drab grey " ; (2) the coxae of the hind legs 

 " mouse-grey instead of buff" or greyish-buff"," and more 

 conspicuously fringed on the lower part of the hind margin ; 

 (3) the fore end of the anterior cross-vein more conspicuously 



