APHIS TANAOBTINA. 



63 



Aphis tanaoetina, Walker. 



Apterous viviparous female. 



Size of body 

 Length of antennae 

 cornicles 



Inch. I 



0-065x0-030 



0-040 

 0-007 



Millimetres. 



1-64x0.76. 



1-01. 



0-17. 



Wholly green both above and below, transparent, 

 often showing through the skin an interlacing of 

 tracheae and numerous green oil globules. Eyes 

 brown. Cornicles very short, somewhat dilated at 

 their mouths. Last abdominal rings slightly pilose. 

 In tlie older specimens the green approximates to 

 olive. 



Pupa. 



Very like the larva. Head broad. Eyes nearly 

 black. Wing-cases olive-brown. 



Winged viviparous female. 



Expanse of wings 

 Size of body 

 Length of antennse 

 cornicles 



Inch. 



0-200 



0-055x0-025 

 0-050 

 0-005 



Millimetres. 



5-08. 



1-39x0-62. 

 1-27. 

 0-12. 



Pea green. Head, thorax, femoral, tibia tips, and 

 tarsi black. Abdomen with a broad patch of olive 

 green, and with one or more interrupted bands of the 

 same colour, accompanied by three dots on each lateral 

 edge. Third antenna! joint often coarsely serrated. 

 Wings with blackish cubitus, stigma, and veins. 



The newly born imagos are paler on the thorax. 



This Aphis swarms on the apical tufts of the tansy, 

 Tanacetum vulgare. Also on the stems of the garden 

 chrysanthemum and cineraria. Taken at Norwich, 

 Walthamstow, and Haslemere. 



