Symblotes have been reported by Cowdry (1925C,1926A,1927) and 

 reviewed by Jaschke (1933). 



Dinnik and Zximpt (1949) reported on larval integumentary sense 

 organs in relation to those of nymphs and adults as well as of 

 other species. 



The "R. simus group" of Zumpt (19A-2A) consists of the species 

 R. simus with two subspecies simus and senegalensis , and of several 

 related species, R. longicoxatus , R. lunulatus , R. tricuspis , R. 

 distinctus, R. p. planus, and R. pT complanatus , R. simpsoni , "and 

 R. reichenowT (probably = R. zumpti Santos Dias 1^508). These are 

 all EJthiopian Fauna! Region species. Zumpt also included the Indo- 

 Malayan species R. h. haemaphy s alo i de s and R. h. pilans , but I 

 hesitate so to consider them. " " 



The outstanding diagnostic criterion of the R. simus group is 

 a scutal pattern of few large, fairly deep punct anions arranged in 

 about four more or less regtilar, individually characteristic, long- 

 itudineil rows. Among these, interstitial punctations are usually 

 inconspicuous. Adanal shields of males of each species are dis- 

 tinctive. Female scutal patterns may be more variable and those 

 of certain closely related species or subspecies may be difficult 

 to differentiate. 



Actually, R. s. sanguineus conforms to this group criterion 

 and might well "Be consicfered as a member of the R. simus group. 

 It woiild then also be much easier to associate tTie Indo-Malayan 

 species, mentioned above, with this group. Theiler (correspond- 

 ence) writes that she agrees with this view. Santos Dias (1952C) 

 has considered this group differently. 



IDENTIFICATION 



Males ; This sex is easily recognized and extremely few spec- 

 iniens ever cause doubt as to their identity. The group criterion 

 of four more or less regular rows of rare scutal punctations is 

 always definite, but their distribution and depth are somewhat 

 variable. Although interstitial punctations are usually faint 

 or obsolete, a few specimens show them more distinctly, thovigh 



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