I 26 p. VAN DER GOOT, NOTES OR ORIENTAL APHIÜIDAE. 



Principal morpliological characters. 



Body with strong spines, as in the apterous female; no 

 waxglands present. Abdcfminal stigmata apparently still 

 wanting. 



Alate viviparous female. 

 Measurements. 



Colour. 



Body dull blackish throughout. Eyes and antennae black. 

 Legs greyish black. Siphunculi and cauda black. Pterostigma 

 of forewings greyish black. 



Morphological characters. 



Body of the usual Hormaphidina-%\\-à.'^ç., practicall}' bare; 

 abdominal stigmata apparently only present on the abd. 

 segments 3 and 4. 



Antennae less than half as long as the body, five-jointed ; 

 relative lengths of the last antennal joints about as : 72, 40, 30. 

 Sensoriae are distributed as follows: III 21,' IV 9 — 11 -j- 1, 

 V 5 — 6 -|- 1. Secundar)- sensoriae very narrow, occup}*ing 

 about ^/^ of the circumference of the antennal joint; the 

 integument between the sensoriae is transverseh' striate. 

 Primary sensoriae not broader than the secundary ones. 



Rostrum, siphunculi, etc. about as in the apterous form. 



Wings with the usual Thoracaphis-\QX\iX\o\\. Media I once 

 forked, the fork being long and narrow, in some examples 

 obsolete; media II and cubitus with a relatively long common 

 basal stalk. Hooking-hairs 2 — 3. 



Biology. 



This interesting small Thoracaphis-speci&s was collected 

 on April 6'^ 19 17 at Hongkong, living in moderately large 



