Aphididae of Formosa. — I. 75 



Distrilnition. — Formosa (Taihoku). 



India (Das); Ceylou (v. <1. Goot). 



Hitherto unrecorded from Formosa. 



This species is very closely related to Shivaphis ceUicolens (Essig et 

 Knwana). In S. ceUicolens, the brachypterous form (immediate) appears 

 very commonly, but in the present species, this form is not found. 



The winged viviparous females of ShlvapJiis celti J )as are very 

 common from the spring onwards throughout tlie autumn, but they 

 are extremely rare in the winter, when usually only the wingless 

 viviparous females may be seen. 



I have collected only a few males of the present species in 

 December 1920 and .Januar 1921 in Tailioku, but no oviparous females 

 have been discovered. 



Subtribe SaltusaphidinL 

 Phyllaphoides n. g. 



Wingeil form : l')ody oblong, soft, witliout prominent hairs, l)Ut 

 with white cottony secretions. Eyes prominent, but without ocular 

 tubercles. Frontal tubercles absent. Antennae of 6 joints, as long as 

 the body; sensoria circular; spur as long as the base- Rostrum 

 not long. Thorax normal. Wings hyaline; the 3rd oblique twice 

 forked; hind wings witli 2 obliques. Cornicles very short, much 

 wider than long, scarcely more than pores. Cauda globular, constricted 

 at the base. Anal plate bilobed. Legs slender; tarsi without limpid 

 empodial hairs. 



Closely related to Thripsaphis Gillette, from which it is distingui- 

 shed by the structure of head and by the body having white cottony 

 secretions, but lacking spine-like hairs. 



Type. — Pkyllapholdes bamhuclcola n. sp. 



Phyllaphoides bambuclcola n. sp. (PL. vi, 1,) 

 Winged viviparous female. 

 White ; mesothora.x pale yellow. Eyes black. Antennae white, 



