AFRICAN APHIDIDAE — PART 11. 



113 



British East Africa : Nairobi (T. J. Anderson). Transvaal : Onderstepoort, 

 6.iv.l3 {G. Bedford). England: Wye, Kent, 1.x. 14 {F. V. Theobald); Little 

 Hadham, Herts, 17.iii.l5 (F. V. Theobald). Italy (Del Guercio). 



Food-plant. Chrysanthemums. 



Since I have found this species in Europe and have compared it with the African 

 specimens and have obtained alate females from Nairobi and Kent, I fmd that they 

 agree so closely with Del Guercio' s M. chrysanthemi that I have sunk bedfordi as 

 a synonym of that species. 



Fig. 8. MacrosipTwniella chrysanthemi, Del G-., alate viviparous $ ; 

 A, antenna; B, cornicle; C, cauda. 



The apterae are a deep blackish-red to almost black and very shiny. The alatae 

 are very sluggish. They cluster on the top shoots of cultivated chrysanthemums, 

 both in the open and under glass, and do a considerable amount of damage, 

 distorting and stunting the flower buds. In England they seem to occur from 

 September to November in the open and right through the winter under glass. 



Rhopalosiphum carduellinum, sp. nov. (flgs. 9, 10). 



Alate viviparous female. — Thorax and pleurae black. Abdomen green, with two 

 pairs of elongated black spots in front, then a large dark area, four laterally elongate 

 black spots on each side before the cornicles, the last the smallest, a small dark patch 

 before the cauda, which with the anal plate is black. Antennae longer than the body, 

 dark, the first segment a little longer and much wider than the second ; the third long, 

 but not quite as long as the sixth, base paler, with 37 to 40 sensoria spread over the 

 whole segment, some on each side projecting, giving a fine tuberculate appearance ; 

 fourth segment about two-thirds the length of the third, with 20 to 25 sensoria over 

 its whole length ; fiith a little shorter than fourth, with a line of six sensoria and two 

 smaller basal ones ; sixth with the basal area less than one-fourth the length of the 

 flagellum, all the segments imbricated, the flagellum markedly annulated, with a few 

 short, scanty hairs. Proboscis with the last two segments dusky, reaching just past 

 the second pair of legs. Legs moderately long, apical half of femora dark and a large 

 dark area on the apex of the tibiae ; tar^ dark ; tibiae with fine, small hairs. Wings 

 normal, with pale yellowish-brown veins and stigma. Cornicles black, thin, sKghtly 

 swollen in the middle, more than half as long as the third antennal segment, apex 

 with a few transverse lines, rest imbricated. Cauda prominent, bluntly pointed, 

 nearly half the length of the cornicles, with three pairs of lateral hairs and one dorsal 

 subapical one. Anal plate black and a marked black spot below it. Length, 2*5 mm. 



Apterous viviparous female. — Pale green ; eyes red. Apices of the antennal seg- 

 ments and all the sixth brown. Tibiae, tarsi and the apex of the femora brownish ; 



