Ixodides 14 J 



Reference: 



Bedford, G. A. H. 1931. NuttalUella namaqua, a new genus and species 

 of tick. Parasitol. 23:230-232 + PI. X. 



Ixodidae Murray, 1877 



Figure 105 



Diagnosis: The bodies of this family are oval and the gnathosoma 

 is anterior and visible from above. The scutum of the males extends 

 to the posterior margin, while that of the females is restricted to the 

 propodosoma. Both the larvae and the nymphs have scuta similar to 



Figure 105 Dermacentor variabilis (Say), 

 Cooley 1938) 



1821. Dorsal view of female. (After 



the females. Eyes may be present or absent. The larvae have two pairs 

 of ventral stigmata lateral to the legs. The nymphs and adults have a 

 single pair of spiracular plates. The terminal segment of the palps is 

 reduced and inserted ventrally on the penultimate segment. Segments 

 of palps are not freely movable. Porose areas are present on the base 

 of the gnathosoma in the females. 



The Ixodidae can be divided into three subfamilies by use of the 

 following key : 



Key to the Ixodidae 



1. Anal grooves do not surround anus anteriorly; ventral surface of 

 males not almost completely covered by series of plates % 



