54 n, Takahashi. 



Legs with iiuuiy muderately lung Imirs; tarsi ratlier sliort; hind 

 tarsi much shorter than tlie cornicle. 



Length of body — 1.5 mm. Antenna — 0.5") nun. 



Winged viviparous female. 



Body with some normal hairs. Antennae very short, slightly 

 stout, imbricated, without liairs; the ord joint with o — fi large circular 

 sensoria almost in a row over the whole length: the 4th joint lacking 

 sensoria; the relative length of joints as follows: III — 18, 1\ — \2. V 

 — 14, VI — 26(10+16). Rostrum reaching the middle coxae. Protho- 

 rax with a short distinct tubercle on each side: tiie 1st. 3rd and 7th 

 abdominal segments with a small lateral tubercle, ^^'illgs hyaline: the 

 2nd branch of the 3rd oblique short; hind wings witli 2 obliques which 

 are parallel; booklets 3. Cornicles very sliort, nut reaching the caudal 

 base, imbricated, cylindrical, very slightly tapering, about :; tinus as 

 long as wide, about 1.5 times as long as the hind tarsi, equal in length 

 to those of the wingless form. Cauda a little longer than the hind 

 tarsi, l)ut very slightly shorter than the cornicle, constricted about the 

 middle, with some pairs of lateral l)i-istles. Legs slender, with many 

 hairs; tarsi rather short. Head, antetmae, e3'es, thorax, cornicles and 

 Cauda black. Abdomen greenish. 



Lengtii of IhkIv — 1.5 mm. Antenna — 0.75 mm. 

 Fore wing — 2.4 mm. 



Host. — Artemisia vulgar is. var indica. 



Distribution. — Formosa (Shirin) 



Collected by Mr. E. Kurosawa. 



The species described above is distinct from all the species of 

 Aphis found on tiie artemisia in the very short cornicles. 



Aphis formosamis n. sp. (PL. xiv, 1. tigs. 10 — 14). 

 Described from specimens preserved in alcohol 



