273 



AFRICAN APHIDIDAE— Part III.* 

 By Fred. V. Theobald, M.A. 



The following are some new species of Aphididae found in Africa. The majority 

 are from the collection sent me by Mr. F. C. Willcocks, Entomologist to the 

 Sultanic Agricultural Society of Egypt. Others have been received by the Imperial 

 Bureau of Entomology. 



Four previously described species are added, so as to keep these lists complete : — 



1. Macrosiphum dahliafolii, nov. sp. 



2. Aphis durantae, sp. nov. 



3. Aphis zizyphi, sp. nov. 



4. Aphis ficus, sp. nov. 



5. Aphis tamaricis, sp. nov. 



6. Aphis bauhiniae, sp. nov. 



7. Aphis buddhiae, sp. nov. 



8. Aphis mathiolae, sp. nov. 



9. Aphis mathiolellae, sp. nov. 



10. Aphis pruniella, sp. nov. 



11. Aphis pomonella, Theobald. 



12. Aphis pheidok, Theobald. 



13. Aphis acetosae, Koch. 



14. Siphocoryne pseudobrassicae, Davis. 



15. Hyalopterus insignis, sp. nov. 



16. Myzus pterisoides, sp. nov. 



1. Macrosiphum dahliafolii, sp. nov. (tig. 1). 



Apterous viviparous female. — Apparently deep reddish, with black tubercles on 

 the body ; black cornicles and cauda ; black antennae, except for base of third 

 segment. Legs apparently yellowish-red, but the femora black, except just at 

 base, a small dark area at base of tibiae, a large apical one and black tarsi. 

 Eyes deep blackish-red. Antennae longer than body, arising from prominent frontal 

 tubercles ; basal segment much larger than second ; both deep black, with a few 

 hairs ; third segment about as long as sixth and longer than fourth, with 56-68 

 round sensoria, evenly distributed over its whole length, except just at the pale 

 base and apex ; fourth longer than fifth ; sixth not quite as long as 4 -f 5, its basal 

 area short ; sixth segment paler than third ; in some the flagellum is quite pale ; 

 third to fifth imbricated ; sixth markedly so * a few stiff hairs on third to fifth. 

 Some of the frontal hairs slightly capitate. Rostrum reaching nearly to the third 

 coxae ; apical segment longer and narrower than the penultimate ; apex black. 

 The black cornicles are cylindrical, slightly expanding basally ; broad and a little 



*Part I— Bull. Ent. Res., iv, pp. 313-337; Part II— Bull. Ent. Res., vi, pp. 103-153. 



(C419) f 



