(Figure 63); note especially the pigmented spot at scutal mid- 

 length that is both within and outside of the lateral [groove; 

 also the six or eight partially pigmented festoons. Some large, 

 deep punctations are scattered over the scutimj these are fewer 

 thaji in A. poirposum but more numerous than in A. variegatum . 

 The lateral groove is long. This is a medium size tick measuring 

 approximately 5«0 mm. long and ^.0 mm. wide and is easily dis_ 

 tingtiished from all other species. 



Female ; Easily identified in typical specimens but its 

 critical characters are more variable than those of the male. 

 Rather few females are extant in collections and v;hen this spe- 

 cies and A. variegatum are collected from the sane herd a few 

 questionaBle specimens may present themselves. 



Typically, the scutal contour is much more narrowed pos- 

 teriorly than that of A. variegatum , but intermediate individ- 

 uals do exist. Scutal pvinctations , usually coarse and crowded 

 only in the lateral fields, sometimes spill over into the cen- 

 tral field; small punctations scattered over the scutum tend to 

 become rather large in a few individuals. Pigmentation of most 

 specimens consists of a narrowly elongate area in the central 

 field posteriorly and a pair of small spots laterally, but this 

 character is somewhat variable. Eyes, coloration, and relative 

 size are like those of males. 



- 223 _ 



