Aphididae of Fui-mosa. — I. "io 



Anil. Kept. Hawaii Agr. Expt. St. p. ol (1910): Essig, Pom. Coll. 

 Jour. Ent., iii, p. 601 (191 1); Davis, U. S. Dept. Agr., P.Lir. Eiit., tech. 

 Bull. XXV, pt. i, p. S (1012); Theobald, Bull. Ent. Research, iv, p. 332 

 (1914); van der Goot, Contril). Faun. Ind. Neerlaml. i. iii, p. TO (1917); 

 Essig aii<l Kuwana, Proc. Calif. Acad. Sc. viii, p. 80(1918): Swain, 

 Univ. Calif. Pub., iii, 1, p. 129(1919): Takahashi, Zool. Mag. Tokyo, 

 p. 197 (1920). 



Toxopiem cUrifolia, f^ak\, ^mi^mmmm^ (*^fc) No. 8, p. 12.^ 



Hosts. — Citriis iipp; Ficus retusa; T/ieaspp; Salix sp. 



Distribution. — Formosa (Taikoku); .Tn\a (v. d. G.); Ceylon (v.d. 

 G.); Hawaii (Fullaway); India (Buckton): Africa (Theob- 

 ald; Europe; North Ameiica. 



In Tokio I have collected many viviparous females of this species 

 on the galls of Astegopteryx nekoashi Sasaki. 



Yaviataphiii ruJifMonilnnlis (Sasaki)? 



Toxoptera rufiabdomlnalls Sasaki. 

 YdmatapMs ruJiabdomiiidUs Mats. 



e ^ y^&^m B ^m^ii^mmm p- 202 ( m jgH+ra^) 

 **#- ^mmmmmm^ (mt) no. 8, p. 131 (:kje^^). 



Matsumura, Jour. Coll. Agr. Sapporo, vii, pt. 6, p. 363 (PJ17). 

 Host — Oryza saliva, attacking the root. 

 Distribution. — Formosa (Ako); Japan. 



I have never seen this species from Formosa. 



Key to Ftjrmosan species of Aphis. 



(1) Cornicles short, almost as long as or shorter than the cauda...( 2 ) 

 Cornicles longer than the Cauda (11) 



(2) Cornicles with a few bristles A. ficicola n. sp. 



Cornicles without bristles (3) 



