FEMALES 



1. Coxa I with shallow, rounded e:aar- 

 gination separating internal and 

 external spiir. Palpal basal segment 



and hypostome as in male B . ANITULATUS 



Figures 106, T07, and 117 



Coxa I with deep elongate "'inverted 



V"' shape cleft dividing spurs 2 



2. Hypostome 3/3 (rarely 3.5/3.5). 

 Palpal basal segment with ventral, 



inner bristle- bearing protuberance B. DEC0L0RATU3 



Figures 1107 111, and 116 



Hypostome U/U* Palpal basal segment 

 ventrally with inner margin concave 

 and lacking bristle-bearing protu- 

 berance B. MIGR0FLU3 



Figures 11^., 115, and 118 



Note 



The nimber of longitudinal files of denticles on each side of 

 the hypostome is expressed by a formula such as k/l\ or 3/3. The 

 number of these files is constant in most species of ticks, but 

 the nvimber of denticles in each file may be more variable. The 

 formiila 3.5/3.5 indicates that there are three complete and one 

 shorter file of few denticles anteriorly on each side of the 

 hypostome . 



Following Kdnning, the length/width ratio of the female scutum 

 has usually been considered to be an important diagnostic character. 

 Examination of large numbers of field- collected specimens from Afri- 

 ca and elsewhere reveals wide variation in this feature within each 

 species and no valid data for diagnostic purposes. 



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