DISTRIBUTION 



H. impressum is a "West African tick that ranges eastward into 

 the Sudan. It has not been found south of the equator, in the 

 great northern deserts of Africa, or on the Mediterranean littoral. 



WEST AFRICA ; FRENCH WEST AFRICA (As H. im pressum sp. nov.; 

 Koch ISA/.. As H. aegyptium impressum typica ; Schulze 1919, and 

 Chodziesner 192Z. As H. Impressum impressum ; Schulze and 

 Schlottke 1930, and Kr'atz 1940. As H. savignyi intermedia; 



Girard and Rousselot 19A-5> and Rousselot 1946. As H. impressum : 

 Rousselot 1953B). NIGERIA (As H. impressum ; Unsworth 195^. 

 Material in EMNH from Katagum; 1. H. det.;. 



CMTRAL AFRICA ; CAMEROONS (As H. impressvun ; Rageau 1951, 

 1953)1 FRENCH JEQUATQRIAL AFRICA (As~H . lim^essum ; Rousselot 

 1953B). 



EAST AFRICA ; SUDAN (As H. impressum ; Hoogstraal 1954B. 

 Feldmaa-Muhsam 1954) . " 



/"?UGANDA and ERITREA.; As H. impressum ; Wilson (1949B) 

 and TonellL-Rondelli (1930A). fHese may refer to H. rufipes or 

 to H. truncatum. 7 "" 



HOSTS 



Domestic cattle are the chief hosts of H, impressum , and are 

 mentioned by all authors. No other hosts have previously been 

 reliably recorded. In Darfur, camels are frequently infested 

 and horses are sometimes attacked. 



BIOLOGY 

 UnstTodied. 



DISEASE RELATIONS 

 Unstudied . 



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