ArHIl)Il\T3 OF FORMOSA. 57 



a-s the 5tb autouual joint. 



Leugth of body — about 2.0 mm. Auteuna — alwiit O.oS mm. 



Host plaut. — S'dvla unlhriai/dia K. BC. attacking the root. 



Distiibutiou. — Formosa : Tailiokn. 



Many wingless forms were colk'ct».:d by Mr. H. Sneta on April 9, 1922, 

 uear Talhokii. 



The genus ForJa is uow t) Japan and F(jrmosa. 



