42 



Genus Omithodoros 



Key for the determination of species of Omithodoros. 



(a) 



(b) 



(c) 

 (d) 



(•) 



(/) 

 (9) 

 (h) 



(i) 

 U) 



(Exclusive of doubtful species q.v, 



(Integument mammillated or granular 

 ( „ not mammillated 



(with eyes . 

 (without eyes 



(Integument pitted, no eyes 

 ( „ finely wrinkled 



(with flat contiguous granulations 

 (with hemispherical granulations 



(with body broad and rounded in front 

 I with body sub-conical in front . 

 (with eyes of equal size 

 (with anterior pair of eyes larger 



(with obvious discs 1 .... 

 (without obvious discs 1 



(with movable cheeks to camerostome 

 (without movable „ „ 



.''coxae II larger than I ; with tarsi forked 



distally 

 I coxae II smaller than I ; with 3 humps on 

 [ tarsi I— III . 



I tarsi slightly humped 



(tarsi II — IV with prominent dorsal humps 



p. 41.) 



b. 

 c. 



d. 

 e. 



megnini, p. 71. 

 lahorensis, p. 67. 



pavimentosus, p. 62. 

 /• 



moubata, p. 46. 

 9- 



savignyi, p. 42. 

 coriaceus, p. 55. 

 h. 

 i. 



talaje, p. 59. 

 3- 



furcosus, p. 70. 



turicata, p. 57. 



erraticus, p. 63. 

 tholozani, p. 64. 



ORNITHODOROS SAVIGNYI (Audouin), 1827. 



PI. II and Figs. 58, 59-65, 70, 71. 



Synon.: Argas savignyi Audouin, 1827, p. 183. 

 Omithodoros savignyi C. L. Koch, 1844. 

 1 0mithodoros morbiUosus Gerstaecker, 1873 (see p. 80). 

 Argas schinzii Berlese, 1889. 

 Native names : see 0. moiibata, p. 46, with which it must be included by natives 



in the places where both species occur together, as will be seen by reference 



to their geographical distribution (see pp. 46, 52). 



1 See footnote, p. 40. 



