A small external spur is also present on coxa IV of Theiler*s 

 and some of the present material; on one specimen no spur or sign 

 of a spiir is present. Ntrttall and Warburton describe this as "a 

 very slight tubercle" in their specimens. The presence and size 

 of a spur on coxa IV is quite possibly subject to some variation. 



Previously it has been difficult to differentiate between 

 Ixodes cavipalpus and I. rubicundus Neumann, 190^.. It is probable 

 that niwierous published remarks about East African and Congo I. 

 rubicundus apply actually to I. cavipalpus , as is true for all 

 such material seen by Arthxar Tins . ) , who presents a more complete 

 description with adequate criteria for each species. I. rubicundus 

 limbatus Neumann, 1908, is considered a synonym of I. cavipalpus 

 on the basis of examination of type material, ~ 



Although Nuttall and Warburton in subsequent reports stated 

 the date of authorship of I. cavipalpus as 1907, the actual date 

 of issvie of number U of voTiuik"!/. of the Proceedings of the Cam- 

 bridge Philosophical Society, in which the original name and des- 

 cription was published, was 10 March 1908. Massey (1908) men- 

 tioned: " Ixodes cavipalpus , Nutt. & Warb. (sp. nov.)," without 

 further reference except that the material came from a baboon. 

 This obviously referred to specimens that he had sent to Nuttall 

 and Warbxirton who used them as type specimens for the description 

 of this species. The date of publication of number 5 of volume 

 12 of the Journal of Tropical Medicine and Hygiene, in which 

 Massey's paper appeared, is 2 March 1908. Massey's usage of this 

 name therefore comprises a npmen nudum. 



IDENTIFICATION 



Males fall in the group in which anal grooves are slightly 

 divergent posteriorly; the degree of divergence may be so slignt 

 that the grooves are almost parallel. The long, ovate scutum is 

 widest at midlength and has only faint, shallow punctations and 

 short, divergent cervical grooves; lateral grooves are absent and 

 the marginal fold gradually widens posteriorly; the scutal surface 

 is glossy and bears short, fine hairs. Ventrally, the basis capi- 

 tuli has a wide V_shaped point medially near its posterior border. 

 Coxa I has a slight posteromedian spur, and coxa IV has either a 

 slight external tubercle, a small external spur, or no tubercle 

 or spur; the other coxae are unarmed. 



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