KB? TO SUDAN SPECIES OF HYALOMMA 

 (TYPICAL SPBCIMEHS ONLY) 

 MALES 



1. Center of subanal shields character- 

 istically exterior of the axis of 



the adanal shields^ 2 



Center of subanal shields character- 

 istically in line with the axis of 

 the adanal shields 3 



2. Mediiun size ticks (scutum about 3.8 



X 3.0 mm.). Lateral grooves extending 

 anteriorly at least to midlength of 

 the scutum. Scutiim largely covered 

 by medium size punctations. (Common 



on cattle in central Provinces) H. IMPELTATUM 



Figures 170 and 171 



Large ticks (scutum about U»5 x 3.2 

 mm.). Lateral grooves limited to 

 posterior third of scutum. Scutum 

 with few large, scattered, irregvilar 

 punctations (sometimes also with 

 small ones). (Common where camels 



occur in Sudan) H. HICMEDARII 



Figure's 162 and 153 



*In H. excavatum , and sometimes in other species that have en- 

 gorged on large animals such as camels, and have considerably 

 stretched their integument, the subanal shields may be laterally 

 displaced. Such excavattim specimens would appear to be H. 

 dromedarii , except for smaller size, fewer and smaller scutal 

 punctations, and differences in the caudal area of the scutum. 

 See also identification of H, impeltatum for superficial varia- 

 tion among unfed males, which may cause them to be suggestive 

 of H. marginatum . 



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