120 



Ixodidae: Genus Dermacentor 



Group 2. 



Genus (3) Dermacentor : usually ornate, with eyes and festoons ; 

 with short, broad or moderate palps and basis capituli rectangular 

 dorsally. In some species coxae I to IV of the £ increase pro- 

 gressively in size; in all species coxa IV is much the largest; the </, 

 moreover, shows no ventral plates or shields. Coxa I bifid in both sexes. 

 Spiracles sub-oval or comma-shaped. Figs. 121, 122. 

 Type species : Dermacentor reticulatus (Fabricius). 



DERMACENTOR 



?*c£ <*-c <L*L> /^ 



Fig. 121. D. variegatus var. kaimhadalus Neumann, 1908, i : in dorsal and ventral 

 aspects (from Neumann, 1908). 



Fig. 122. D. variabilis (Say, 1821), ? : capitulum and scutum (sketch from Salmon and 

 Stiles, 1901; G. H.F.N, del.). 



