EAST AFRICA ; SUDAN (Hoogstraal 195AB). 



UGANDA (Neave 1912. Mettam 1932. Wilson 19^8A,1950C). 



HOSTS 



All authors report this species from elephants, Loxodonta 

 africana subsp. Mettam (1932) also listed the '* common duiker". 



BIOLOGY 



Unstudied, In Banningville territory of Belgian Congo '"all 

 sick elephants carry this tick and Amblyomma tholloni , sometimes 

 in great numbers'* (Fain 1949). 



DISEASE REIATIONS 



It has been s\iggested that either this species or Amblyomma 

 tholloni may transmit piroplasmosis (Nuttallia loxodontis j of 

 elephants in the Congo. 



REMARKS 



Schulze (1941) noted features of the tarsus and haller's 

 organ of this tick. 



Santos Dias (1952F) has separated 1-tozambique populations 

 into another subspecies, D. circumguttatus cunha-silvai . These 

 specimens are larger than~those from more northerly parts of 

 Africa and exhibit more irregular pale scutal coloration in 

 several smaller, more divided spots rather than in three large 

 spots as in females of the typical subspecies and eight large 

 reg^llar spots as in males of the typical subspecies. These dif- 

 ferences, however, appear to be similar to individual variants 

 of D. rhinocerinus , reported by Bequaert (1930B), and larger sub- 

 sequent collections may indicate the necessity of dropping this 

 subspecies. 



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