bacteria, and lesions from its bites may also lead to lameness in 

 sheep. The possibility that the hairy tick may be a vector of 

 sweating sickness (virus) of cattle has been mentioned. 



XDEJJTIFICATION 



Male ; H. rufipes , almost without exception, is a large, 

 robust, shiny black tick with a comparatively broad body outline. 

 Its scutum is densely and rather uniformly punctate, so much so 

 that the lateral grooves are obscured. The punctations are close 

 together and while they give the impression of being rather uni- 

 form, they usually grade imperceptibly from large posteriorly to 

 smaller anteriorly. There is little differentiation of the 

 cavidal area. Ventrally, the subanal shields are directly pos- 

 terior of the adanals and the circumspiracular area is more or 

 less hirsute, but a fair to dense acciamulation of hairs always 

 occurs in this area. The ventral integument is usually somewhat 

 more hirsute than in other species. The legs are reddish brown 

 with bright, paler rings. The posterior body margin is typically 

 broadly rounded but not infrequently may be somewhat constricted 

 and thus tend to approach the form of that in H. impressum . New- 

 ly molted specimens are reddish brown and rare^preserved Individ- 

 uals show this color. The body shape of some specimens is more 

 narrowly elongate than is typical for this species, but such 

 individuals always appear to be rather weak and poorly nourished. 



Females ; This sex often reaches considerable size. Cir- 

 cumspiracular pilosity and color are like those of the male; 

 scutal punctations are like those of the anterior part of the 

 male scutum. The genital apron is a vride shield that bvilges 

 strongly from a deep anterior and posterior indentation. The 

 outline of the apron is much like that of H. marginatum and H. 

 impressum ; however the division of the apron of the latter spe- 

 cies into an anterior ridge and a posterior button readily 

 separates this from H. rufipes . 



The larva has been sketched by Bedford (193^) and Theiler 

 (19A3B). 



- ^90 - 



