AFRICAN APHIDIDAE— PART III. 



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past the second pair of legs ; its apical segment a little longer and narrower than the 

 penultimate. Prothorax yellowish green with a dusky olivaceous collar. Thoracic 

 lobes polished blackish or olivaceous black. Abdomen green, skin reticulate ; two 

 blackish transverse bars at the base ; a submedian row of small black specks, and 

 there may be a transverse row in front of and between the cornicles ; three large 

 black spots on the sides of the abdomen in front of the cornicles, and one at the 

 base of the cornicles, making four on each side. Apical margin of caudal and pre- 

 caudal segments of abdomen blackish. Cornicles dusky at base, median area 

 somewhat greenish or pale smoky ; apex dark ; rather short and thick ; about as 

 long as the cauda and much shorter than the third antennal segment, imbricated. 

 Cauda obscure ochreous ; spinose, bluntly acuminate ; with three pairs of lateral 

 hairs. Anal plate darker than cauda. Legs with dusky greenish femora, paler at 

 their base ; first pair paler than second and third ; tibiae yellowish, black at the 

 apex ; tarsi black ; coxae and trochanters greenish. Wings with greenish insertions ; 



A. 



Fig. 8. Aphis mathiolae, sp. n. : A, antenna of alate $ ; a, third 



segment further enlarged ; ti, cornicle ; C, cauda ; D, apex ot wing ; 



E, head and antenna of apterous $, F, cornicle; G-, cauda. 



costa smoky ; cubitus yellowish ; stigma smoky ; oblique veins dusky. Venter of 

 prothorax and head greenish ; of head darker than prothorax. Sternal plates blackish 

 to blackish brown. Venter of abdomen green. A pale papilla on each side of 

 pronotum ; one between the meso- and meta-thoracic legs and one between the 

 cornicles and cauda on each side. The cauda projects well beyond the cornicles. 

 Length, 2 mm. 



Apterous viviparous female. — Antennae shorter than body ; first segment wider 

 than second ; third one and a half times as long as fourth and as long as the sixth ; 

 fourth slightly longer than fifth ; sixth about as long as 4 -f- 5, its basal area not 

 quite half the length of the flagellum ; third to sixth imbricated. A papilla on each 

 side of pronotum and one between the meso- and meta-thoracic legs and another 

 between the cornicles and cauda. Proboscis reaching to the second coxae ; rather 

 broad ; apical segment as wide as penultimate and a little longer. Cornicles 

 apparently dusky, a little longer than cauda ; expanding basally ; imbricated. 

 Cauda palish, projecting beyond the cornicles ; spinose, with three pairs of lateral 



