STAGE DAYS EXTREMES 



Larva 6 3 to 11 



Nymph 7 5 to 9 



Female 11 7 to 15 



These authors reported individual females laying from 2000 

 to 8000 eggs, but Pomerantzev (1950, for the synonymous H. 

 asiaticum ) notes as many as 14000 eggs. ~ 



Males mate with unengorged or vath feeding females while on 

 the host. In the absence of males, females either detach pre- 

 maturely from the host or remain fixed for an exceptionally 

 long time _ as long as two months. 



In the Kazalinski district of Russia (Pomerantzev 1950), 

 adults parasitize domestic animals from April to the end of 

 October, but are lODst common from May through Aixgust while 

 larvae and nymphs attack hedgehogs in July and August. Fe- 

 males that become engorged late in autumn undergo a winter 

 diapause and do not oviposit till spring. 



Ecology 



Delpy and Gouchey (1937) found H. drome darii to be very 

 tolerant of low humidity and extreme's in temperature {(PC. to 

 37°C . ) . Unfed larvae and especially unfed nymphs avoid dry 

 atmosphere more than engorged stages and adults. 



H. dromedarii is probably the most con^jletely desert- adapted 

 of ail ixodid ticks. In remote Siwa Oasis of Egypt, it, together 

 with R. sanguineus , is the only common ixodid tick. Italian and 

 Frenc"R observers elsewhere in North Africa and Soviet workers in 

 Russia have made similar observations. The camel hyalomma ap_ 

 Tpears to be equally at home in all desert sitiiations where ani- 

 mals occur, as well as in semidesert and steppe areas. In Yemen 

 and Eritrea, it is also common in movmtainous areas to 7000 feet 

 altitude wherever there are people and camels (Hoogstraal, ms.). 



When traveling over remote parts of the African and Arabian 

 deserts engorged females have been observed desperately crawling 



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