hosts but the full extent of their importance as hosts remains to 

 be studied, Nymphal preferences may differ from those of adults, 

 although in some species this may not be true. Host size appears 

 to be of some iiiportance, for most larvae parasitize small animals; 

 nymphs attack larger animals; and adults feed on the largest 

 available animals, except carnivores. Immature stages, however, 

 more frequently parasitize carnivores. Cattle and, to some extent, 

 other domestic animals are important adult hosts and wild ante- 

 lopes are also frequently parasitized. The African tortoise, 

 rhinoceros, elephant, and buffalo harbor species mostly restricted 

 to themselves. In general, the domestic animal parasitizing spe- 

 cies are well represented in study collections; others are seldom 

 collected, 



Amblyomma ticks are usually three-host parasites and, so far 

 as known in Africa, there is usually only a single generation an- 

 nually. 



KEY TO SUDAN SPECIES OF AlffilZOMl^A 

 mi£S 



1. Lateral grooves extending anteriorly at 



least to middle of scutum 2 



Lateral grooves absent 7 



2. Eyes small, hemispherical, situated in 



a well defined depression (i.e. orbited) 3 



Eyes flat or very slightly convex, not 



in a depression 5 



3. Festoons with two colors. (Scutal or- 



najnentation always as illustrated ) .A. lEPIDIM 



Figures 68 ajid 69 



Festoons only dark colored U 



- 206 - 



