58 BRITISH APHIDES. 



Aphis sorbi, Kalt. Plate LIV, figs. 3 — 5. 

 Kalt., Walk., Koch (?). 



Apterous viviparous female. 



Inch. Millimetres. 



Size of body 0-050 X 0-025 127x0-62 



Length of antennae 0*040 I'Ol 



cornicles 0*003 0-07 



Small, oval, yellowish green. Eostrum hardly 

 reaches to the second coxa. Nectaries very short. 

 Cauda rounded, inconspicuous. Walker describes it 

 as reddish brown or orange with three tubercles. 



Winged viviparous female. 



Inch. Millimetres, 



Expanse of wings 0*260 6-62. 



Size of body 0*075 X 0*030 1*89 X 0-76. 



Length of antennas 0-070 1-77. 



,, cornicles 0-010 0*25. 



Head, neck-ring, and thorax shining black. Eyes 

 red. Rest of body dark olive-green. Antennas black- 

 ish, with third joint tuberculate. Abdomen carinated, 

 with four or more obscure spots on each side. Cor- 

 nicles green at the bases, and black at the tips. Tail 

 very small and green. Wings ample, with yellowish 

 insertions ; stigma and veins fine brown ; cubital vein 

 forked close to the margin. On each side of prothorax 

 there appears a small spine. 



The winged insect is very active, and takes wing 

 readily if disturbed. 



Apterous oviparous female. 



