and deeper paramedian grooves. A parma, the color of which may- 

 be lighter or darker than the rest of the scutum, may be present, 

 or may appear as a normal median festoon. Two definite pairs of 

 festoons and two more or less fused pairs lie on either side of 

 the parma or median festoon. Delpy states that the scut\im is 

 flat, actually it is usually more or less arched, especially 

 in males that have fed. 



The scutal color varies from dark brown to black; excep- 

 tional specimens, usually very small ones, may be lighter. The 

 leg segments are usually pale anteriorly and posteriorly and 

 darker centrally, but they may be entirely pale yellowish. 



Female ; The scutiim posteriorly and centrally has numerous 

 rather regularly spaced, moderate size, noncontiguous punctations. 

 Scattered among them are several larger and deeper punctations in 

 two parallel rows centrally. The moderate size punctations are 

 usually mostly discrete, but exceptions to this are common. 

 Anteriorly and in the scapular areas, punctations are large and 

 deep; in the lateral fields punctations are absent or present. 

 The deeply depressed cervical grooves are more or less rugose, 

 and the punctations in them are more or less contiguoiis. The 

 scutum of engorged specimens frequently has less distinct punc- 

 tations and grooves. The scutum is generally dark broim in color. 

 It is definitely longer than wide, but the ratio may be reduced 

 in some newly molted, misshapen, or greatly engorged specimens. 



The genital area is distinctive. The central genital apron 

 is an elongate triangle much like that of H. dromedarii but 

 shorter, wider, and usually not quite so narrowly pointed apical— 

 ly. In profile, it definitely bulges anteriorly and is depressed 

 posteriorly. An important principal additional featxure is that, 

 in unmated specimens and in mated but not greatly engorged spec- 

 imens, this genital apron is bordered on each side by a slight 

 bulge that gives the genital area a trilobed appearance not found 

 in any of the other species with which H. impeltatvua may be con- 

 fused. This characteristic is maintain'ed with only slightly 

 less distinctness in greatly engorged females. 



Female body size, in all except runts, is always large. 

 The legs are like those of the male. 



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