it is 63^. Even xerophilic hyalommas abruptly increase water 

 loss at 45*^. (cf. page 154-j. This factor explains in part how 

 the eyed tampan can exist in deserts where little other life is 

 sustained. Cunliffe's (1922) stvidies, from which he concli^ded 

 that the temperature and humidity requirements of both these 

 tampans are much the same, should be repeated with special at- 

 tention to extreme levels. 



Famous for the viciousness of its attack, this tampan is 

 usually well known wherever it occurs. Natives quickly lead one 

 to infested animal corrals, trees under which man and beasts rest, 

 and well sides where the eyed tampan is superficially burrowed 

 awaiting its prey. In Somaliland, lipparoni (l95l) reported, 

 0, savignyi is common under trees where soldiers tether their 

 mules and 0, moubata infests huts beside these trees. Although 

 the adventitious presence of 0. savignyi in buildings must be 

 expected, early records from "Human habitations appear to be based 

 on misidentification. For instsmce, Drake-Brockman's various 

 reports of 0. savignyi in British Somaliland buildings have been 

 questioned "By Anderson (19/+7). Anderson fo\ind 0. savignyi ex- 

 clusively outdoors in the same area, and 0. moiibata , previously 

 thovight to be nonexistant in the area, exceedingly common in huts 

 and coffee houses. 



We have never observed 0. savignyi in sites directly exposed 

 to the sun. Indeed, at the Khartoum quarantine one may see a 

 long, seething line of thousands of hvmgry tampsms helplessly 

 confined to the shade of a row of acacia trees. A few yards 

 away, separated only by the hot, nine o'clock sim, newly arrived 

 cattle tied to a post fence tempt the tampans to cross the glar- 

 ing strip. The next morning, in the coolness of seven o'clock, 

 those tampems under the trees are all blood bloated and resting 

 comfortably in the sand, others are dragging back from their 

 hosts across the now nonexistant barrier, and the legs of the 

 cattle are beaded with yet other podshaped ticks taking their 

 fill of blood in a regular line just above the hoof. 



Laboratory rats and mice, as noted by Heisch (195QAJ, assail 

 this tampan. Rats feast on nymphs aM adiilts. Mice commonly 

 assault nynqjhs, but only particularly bold mice attack adults. 

 These rodents, in tvirn, facilely escape bloodthirsty but lumber- 

 ing adults, although small, active nymphs more easily attack them. 

 Predators in nature do not appear to have been reported, 



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