KEY TO SDDAN SPECIES OF RHIPICEPHALUS 



MALES 



1. Eyes convex or hemispherical, distinctly 

 furrowed laterally or protruding from a 

 depression ("orbited"). Coxa I with 

 distinct dorsal projection 



Eyes flat or slightly rovmded, not 

 convex, hemispherical, fiirrowed, or 

 orbited. Coxa I with or without dorsal 

 projection 



2, Eyes hemispherical, in a depression 

 (orbited). Adanal shields large, 

 enonnously widened posterolaterally. 

 Scutiun dark with dense medium and 

 large size punctations; color con- 

 trasting with reddish body integument 

 and saffron legs. Frequently large 

 (about 5.0 mm, long). (Common through 



much of Sudan) .R. B. EVHITSI 



Figures 2*55 and 265 



Eyes convex, with an encircling fur- 

 row. Adanal shields mildly rovmded 

 laterally, not exceptionally large. 

 Color overall brownish. Scutum with 

 moderately numerous fine and medium 

 size punctations. Fairly small (about 



3.5 ram. long). (Southeastern Sudan) R. PRAVUS 



Figures 2^ and 285 



3. Coxa I with distinctly pointed dorsal 

 projection*. (Localized areas in 



southern Sudan) 4- 



Coxa I without a distinctly pointed 



projection though a smaller, rounded 



hump may be visible in its place. 



(More or less widely distributed) 11 



^. simpsoni (R. simus group), a small parasite of canerats only, 

 typicEuLly bear's this projection but this projection is so small 

 and frequently so reduced that it is not considered distinct 

 enough to include in this section. 



- 5B6 - 



