124 p. VAN DER GOOT, NOTES OR ORIENTAL APHIDIDAE. 



THORACAPHIS HONGKONGENSIS n. sp. 



Apterous viviparous female. 



Measurements. 



Length of body 1.15 m.m. 



Breadth of body 0.85 » 



Length of antennae 0.18 » 



Siphunculi (diam.) 0.0 1 » 



Length of cauda 0.03 » 



Colour. 



Body dull black or bluish black, the dorsum furnished 

 with pale brown spines ; no waxy secretion of any sort present. 

 Eyes, antennae, etc. of a blackish colour. 



Morphological characters. 



Body sub-circular ; pleurae moderatel}- developed, vertical, 

 giving the insect a flattish disc-like appearance. Waxglands 

 allways wanting. 



Céphalothorax as usual verj- large, not separated by any 

 transverse suture or furrow from the adjoining abd. segments 

 (i ± 7); abd. segm. 8 chitinized like the other segments, 

 separated from abd. (i ± 7) by the usual membranous 

 furrow. The relative lengths of the dorsal parts are about 

 as follows: céphalothorax: abd. (1+7): abd. 8 = 50, 14, 6. 



Dorsum and margin of the céphalothorax are furnished 

 with a number of very thick, long spines ; usually their are 

 present on each side along the margins 2-|-2-|-3-(-(3-|-2) 

 spines and along the median line i -|- i -|- i -f (i -f i) strong 

 spines. The dorsal part of abd. (i + 7) is bare, except 3 strong 

 spines along each side and 2 along the hind margin ; the 

 dorsum of abd. 8 has two spines on its central part. The 

 pleurae bear a small number of scattered long, fine hairs. 

 On the dorsum of the céphalothorax can be observed a few 

 irregular groups of fovae : one spinal pair on the mesothorax 

 and 2 pairs of spinal groups on the metathorax ; such fovae 

 are found scattered on the pleurae too. 



Eyes very small, consisting of three facets only. 



