Aphididae of Formosa. — I. Oo 



Legs with some moderately long liairs; liiiid tarsi a little shorter 

 tljau tlie cornicle. 



Length of body — 1.15 nun. Antenna— 1-1 mm. 



Winged viviparous female. 



Body lacking hairs. Antennae imbricated, without hairs; the 

 3rd joint with 5 mostly rather large circular sensoria almost in a row 

 over the whole length; the 4th joint lacking sensoria; the relative 

 lengtli of joints as follows: III— 20, IV— 11, V— 15, VI— 34 (9 + 25). 

 Rostrum reaching beyond the middle coxae. Wings normal; the 3rd 

 oblique reaching the wing apex. Cornicles very short, stout, not 

 reaching the caudal base, iml)ricated, broadest at the Ijase, almost not 

 tapering, about 2.2 times as long as wide at the base. Cauda a little 

 longer than the cornicle, with 6 long lateral bristles. Legs slender, 

 with some moderately long bristles; hind tarsi almost as long as the 

 cornicle. 



Length of body- — 1.15 mm. Antenna — (». 75 mm. 



Host. — Stellarm uUginosa. 



Distribution. — Formosa (Shirin). Collected by Mr. E. Kurosawa. 



Aphis hurosawai n. sp. (PL. xiv, 2, figs. 1-3). 

 Wingless viviparous female. 

 Green, slightly covered with a white powder. Cornicles black. 

 Body oval, with some normal hairs. Frontal tubercles absent. An- 

 tennae short, imbricated, with a few short hairs; the 3rd joint lacking 

 sen.soria; the relative length of joints as follows : III — 11, IV — 9, V 

 — 10, VI — 22 (8 + 14). Rostrum reaching the middle coxae. Prothorax 

 and tlie 1st and 7th abdominal segments with a small blunt tubercle 

 on the side. Cornicles very short, rather stout, not reaching the caudal 

 liasc. imbricated, broadest at the base, slightly tapering, about 3 times 

 as long as wide at the base. Cauda almost as long as the cornicle, 

 constricted about the middle, with 3 pairs of lateral bristles. 



