Aphididae of Formosa. — I. 85 



Subtribe Anoecini. 

 Aiceona new genus. 



Body with many long fine luiirs. Head not divided. Eyes large, 

 ocular tubercles rather small; those of the wingless viviparous female 

 very small. Frontal tubercles absent. Antennae covered with hairs, 

 nearly not imbricated at all, G-jointed, spur much shorter than the 

 base; sensoria cirucular or oval. Fore wings with the ortl oblique 

 twice forked; stigma short; hind wings witli 2 obliques. Cornicles 

 situated on Itroad liairy cones. Cauda very short, rounded. Tarsi 

 normal. 



Type — Aiceona actinodaphnl n. sp. 



This genus differs from Anoecta Koch in the wing-veins. 



Aiceona actinodaphnl new species (PL. XIII, 2, figs. 2-3) 

 Wingless viviparous female. 

 Black. Body broad and oval, slightly covered with a white 

 powder, and many long fine hairs present. 



Head small. Eyes very small. Antennae short, (')-jointed; the 

 3rd joint without sensoria; the relative length of joints as follows : 

 ni— 50, IV— 24, V— 25, VI— 30 (10 + 20). 



Length of body — 2. mm. Antenna — 0.9 mm. 



Winged viviparous female. 



Black. Eyes and antennae black. Wings dusky, veins and 

 stigma black. 



Body oblong, covered with many long fine hairs. Head liroader 

 than long, nut divided. Eyes large; ocular tubercles rather small. 

 Frontal tubercles absent.' Antennae with many long fine liairs, H- 

 jointed; the 3rd joint with 27, the 4th 12 and the 5th 7 + 1 protruding 

 circular sensoria scattered over thu whole length; the relative length of 

 joijits as follows: III— 55, IV— 30, V— 27, VI— 32(22+10). 



Rostrum reaching tlie hind coxae. Prothorax and abdomen 



