AFRICAN APHIDIDAE. 



327 



Food-plants : Peach and Nectarine. 



This is the so-called Black Peach Aphis which has been spoken of as Myzas 

 persicae in the Cape and Natal. Myzus persicae, Snlzer, is a greenish and 

 pinkish aphis and may be the one mentioned by Lounsbury as occurring along 

 the Orange River (Leaflet no. 33, Dept. Agric. Cape Col. 1908). I have 

 received Aphis persicae from Pretoria with much-curled peach leaves and these 

 specimens agree exactly with the European species. 



Schouteden places Koch's farfarae as a doubtful synonym. I think they are 

 quite distinct. 



Referring to the Black Peach Aphis, Lounsbury (Leaflet no. 2, p. 15, 1896) 

 says that the majority are parasitised by a minute Hymenopteron and that 

 Syrphid larvae cleared them off' in transit. I only found one parasitised 

 specimen amongst the large number sent from Pretoria. French records Myzus 

 cerasi&s the Black Peach Aphis of Australia ; it is evidently this species (Handbk. 

 Dest. Ins. Victoria, ii, p, 9. pi. xvi.) 



Aphis ligustriella, sp. nov. 



Apterous viviparous female. — Green ; head darker ; cornicles dark brown to 

 black ; base and apex of antennae brown ; legs with dark apex to tibiae and 

 dark tarsi ; cauda dark. Antennae shorter than the body ; first segment broader 

 and longer than the second, third the longest, fourth and fifth about equal, sixth as 

 long as the fourth and fifth, the basal portion about half as long as the fiagellum ; 

 the segments all imbricated. A lateral papilla on each side of the pronotum and 



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Fig. 9 — Aphis lifjushiella, Theo., apterous $ ; (A) head and antenna ; (B) cornicle. 



a smaller one between the second and third pairs of legs. Cuticle of body with 

 reticulate sculpturing. Cornicles black, of moderate length, thick, expanding 

 towards the base, imbricated. Cauda shorter than the cornicles, deep brown to 

 black, with three pairs of lateral hairs ; anal plate black. Legs moderately long, 

 apex of tibiae and the tarsi blackish, femora and tibiae with short hairs. 

 Length 1*3 to 1*5 mm. 



Transvaal: Pretoria, 1. viii. 13 (G. Bedford). 



Food-plant : Privet. 



Described from two adult apterous females and many immature forms. The 

 cuticular ornamentation and the lateral papillae distinguish this species, with its 

 dark thick cornicles and black cauda. 



Aphis nigripes, sp. nov. 



Apterous viviparous female. — Head brown ; eyes black. Pronotum and thoracic 

 lobes yellow. Abdomen yellow, with five small black specks on each side. 



