East African components of montane forests, I. schillingsi 

 and R. compo situs , have already been mentioned (p'age 



Species not already discussed are in part too poorly known 

 to be designated as typically East African or as typically South 

 African. Examples are A. marmoreum (group), R. ?distinctus , 

 and I. rasus ? subspecies, the exact relationsTiips of which are 

 still unknown. Others, such as R. arnoldi , R. muhlensi , and R. 

 supertritus , are widely spread but data are so few and incom-" 

 plete that they shed little light on ecology or distribution 

 patterns. 



A certain group of species that commonly attack domestic 

 animals and that tolerate a moderately low to medium range of 

 humidity factors are widely distributed throughout the Ethiopian 

 Fa\mal Region. They are common in much of the Union of South 

 Africa, in western Africa, and in the Sudan. In the Sudan, their 

 range includes the Central Rainlands and sometimes even fairly 

 arid areas such as the Red Sea Hills and coastal plains. The 

 outstanding examples of this group of pan_Ethiopian species 

 are R. s. siimis , R. e. evertsi , R. _s. sanguineus , B. decolor atus , 

 H. iT leachii , H.' "ruripes , and rfT truncatm . "" 



Another important group of species is almost as widely spread 

 as those listed above but their apparent demand for high tenqjer- 

 ature and a medium humidity range restricts them from much of the 

 Union of South Africa and from the northern savannahs (Fasher- 

 Butana Area) of the Sudan. These species are often common in 

 western and eastern Africa as far south as Mozambique. The out- 

 standing example is A. variegatum . H. h. hoodi, H. aciculifer , 

 and A. tholloni are other specxes in~thiis group. "R . supertritus 

 and ^. muhlensi might also be considered in this category. 



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