AFRICAN APHIDIDAE— PART III. 



275 



segment wider than second, but no longer ; third longer than fourth ; fourth and 

 fifth about equal in length ; sixth about as long as fourth and fifth, its basal area 

 more than half the length of the flagellum, but slightly shorter than the fifth. A 

 small papilla on each side of the prothorax and two small lateral abdominal ones 

 before the cornicles. Cornicles rather short and thick, expanding basally (some 

 more so than in others), faintly imbricated. Cauda not quite as long as the cornicles, 



uxzn55£p3x&ffx3 



B. 



Fig. 2. Aphis durantae y sp. n., apterous $ : 

 A, Head and antenna ; B, cornicle ; C, cauda. • 



bluntly acuminate, with three pairs of lateral and one subapical hair. Anal plate 

 somewhat darkened, with a few apical hairs. Proboscis reaching past the base of 

 the second pair of legs ; dusky at apex ; apical segment narrower and longer 

 than the penultimate. Length, '7-9 mm. 



Egypt : Ghezireh, 31 .iii.1910 and 1913 (F. C. Willcocks). 



Food-plant — Duranta. 



This very small Aphis, according to Mr. Willcocks, lives on the main and secondary 

 veins, chiefly on the upper surface of the leaves of the Duranta. It occurs, he says, 

 in small numbers only. 



Described^ from about 20 apterous females in conjunction with original colour 

 notes, sent by Mr. Willcocks. 



3. Aphis zizyphi, sp. nov. (fig. 3). 



Alate viviparous female. — Very dark olivaceous to brownish^black. Eyes dark 

 brown. Antennae with the two basal segments olivaceous to dusky ; third with 

 basal half olivaceous, remainder dusky ; fourth, fifth or sixth black. Prothorax 

 green with blackish prothoracic collar (with a shade of obscure brown in it). 



^D 



Fig.*3. Aphis zizyphi, sp. n., alate viviparous $ : 

 A, head and antenna ; B, cornicle. 



Thoracic lobes black. Abdomen apple-green. Cornicles faintly dusky to duskv 

 green. Cauda greenish, with base and apex faintly dusky. Wing insertions green ; 

 cubital vein*green ; stigma smoky ; costa and veins dusky. The green abdomen 

 has threedark lateral spots between its base and the base of the cornicles. Legs 

 (04 19) f2 



