AFRICAN APHIDIDAE — PART II. 



133 



tarsi black ; 2nd with, femur black, tibia ochreous shaded at base, tarsus black ; 

 3rd with femur black, tibia very dark brown to almost black, coxae and trochanters 

 black. Abdomen green or very dark olive-green, heavily barred with black, with 

 pale hairs. Cornicles black. Cauda grey or greenish yellow. Also five large lateral 

 irregular-shaped spots between base of abdomen and cornicles, and a sixth spot 

 below and posterior, but touching the base of the cornicle. Head, thorax, sternal 

 plate and venter shiny black ; apex and base of proboscis black, median area ochreous 

 brown ; abdomen dull darkish green, anal plate black. One small specimen had 

 the head and pronotum blackish brown, thorax black and abdomen blackish brown, 

 paler at sides and apex. 



Apterous female. — " Head of varying shades of brown, from dark blackish-brown to 

 bright reddish-brown or pale brownish- orange ; shiny ; bairs pale ; eyes prominent, 

 red. The head has two sub-median areas rather darker in hue, which are continued 

 posteriorly over the thorax. Antennae with 1st segment dusky, 2nd dusky 

 ochreous; 3rd ochreous, apical \ blackish- ochreous, darkening towards apex; 



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Fig. 24. Chaitophorua populi^ L. ; 

 A, head and antenna of alate •? ; B, cornicle ; C, cornicle of 

 apterous $ s D, cauda ; E, head and antenna ; F, Cauda ; 

 G, front femoro-tibial joint. 



sometimes the 3rd segment is much paler ; 4th, 5th and 6th black. Pronotum of 

 the same colour as the head, shiny. Meso- and meta-thorax same as prothorax, but 

 in some specimens the lateral margins are yellowish green ; shiny ; hairs pale. The 

 brown of the thoracic region varies in hue from dark to reddish to Ught brownish 

 orange. Abdomen shiny, dark brown, blackish brown or reddish brown, with paler 

 and darker markings of the same colour. A large green or yellowish green patch in 

 median area of basal i of abdomen. Abdomen yellowish green or green at sides ; 

 apical segments yellowish green. Cauda yellowish green or faintly ochreous. 

 Cornicles dusky to black, paler at the apex. Legs, 1st pair ochreous, tarsus dusky ; 

 2nd femur blackish or dusky oUvaceous, coxae dusky, tibia ochreous brownish at 

 knee and dusky at apex, tarsi black ; on 3rd legs, femur black, tibia ochreous, dusky 

 to blackish brown, tarsus black. Underside of head brownish or orange ; proboscis 

 reaching beyond the 3rd coxae ; thorax and abdomen dull greenish. Cauda dusky. 

 (0177) D 



