only between 65OO and 8800 feet elevation. Wilson (1953) states 

 that this tick is limited to upland forests in East and Central 

 Africa, and work on its ecology and of that of another upland 

 species, R. compositus (= R. ayeri ) is in progress. See also 

 Ecology oT R. compositus (p. 625 J. 



When present, this tick often appears in great numbers 

 (Theiler and Robinson 195^) • Its specialized high altitude 

 preference may account for rarity in collections and for paucity 

 of records. 



DISEASE RELATIONS 



Cattle ; A vector of East Coast fever, Theileria parva , 

 though, on epidemiological grounds some observers have indicated 

 that this species is not a vector. 



REMARKS 



Our present knowledge of the biology, morphology, and tax- 

 onomy of those heavily-punctate rhipicephalids that have shallow 

 lateral grooves or none at all is in an unsatisfactory state. 

 This complex may be referred to as the "Tl. ziemanni group" in 

 place of the *R. aurantiacus group" of Zumpt (19/i.3B). Sub- 

 sequently, Zumpt (I95OAJ has included several species of this 

 group, previously considered as valid, in synonyity. Species 

 now recognized are: R. ziemanni Neumann, 190A (= R. aurantiacus 

 Netimann, 1907, and R.""cuneatus Neiimann, 1908), R. kochi Donitz, 

 1905 (= R. ieanneli Neumann, 1913), R. masseyi Nuttall and War- 

 burton, T9O8* Jjs. R . attenuatus Neiimann, 1^08(6 )^^ and ? = R. 

 tendeiroi Santos T5ias, 1950(E^ 7 and R. muhlensi Zumpt, 1'5^3(b). 

 To this group should be added R. hurti Wilson, 1954 of Kenya 

 and R. serranoi Santos Dias, 1^50(Gj of Mozambique. It is pos- 

 sible that these two species may eventiially be shown to be heavily 

 punctate specimens of R. kochi . /~Theiler states (correspondence) 

 that from evidence presently available, she agrees with the above 

 synonymy_7- 



»It appears that the R. attenuatus of Santos Dias (195^) from 

 RuandsuUrundi is R. kochi , since Theiler, Schoenaers, and Vaeren- 

 bergh have found 1^. kochi "most plentiful" at the same collecting 

 sites from which "Santos Dias' material was sent. (Footnote 

 continued on next page). 



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