ApMdidae of Formosa. — 4. 7 



Hynienopteran in the nymphal stage, as recorded in my former paper, Aphidida - 

 of Formosa, part 2 (p. 75). Rockwood observed that an Aphelinus fed on the 

 juices at the wound made by the ovipositor on the body of an aphis (Jl. Econ. 

 Ent.. x. p. 415). 



In Formosa I have collected the following aphid-parasites which were 

 kindly identified by Dr. A. B. Gahan of the Bureau of Entomology at Washington 

 (through Shiraki and Howard): 



Braconidae 



Parasite Host 



f Macrosiphum neoarlemisiae Takah. 



Lysiphlebus Japonicus Ashm < 



( Toxoptera auraatii Boyer. 



( <iii i niilru ficicola Takah. 



Diaeretus nipponensis \ ii-r •! 



I Iihopalosiphum psi udobrassicae Davis. 



Trioxys sp Macrosiphum citricola v. d. Groot. 



Trloxys */> tphis gossypii Glov. 



L. 



ella gramini Takah. 



Aphidius sp Dilachmis pinifoi-mosanus Takah. 



Aphidius sp Macrosiphum formosartemisiae Takah. 



Aphidius sp Unilachnus oriental-is Takah. 



- Iphidius sp Macrosiphum granarium Takah. 



Aphidius ervi Hal Macrosiphum sp. on Rubtis sp. 



Aphidius sp Macrosipnum tanacetarium Koch. 



1'k a m sp Macvosiphitm formosan win Takah. 



Chalcididae 



, tphelinus sp Macrosiphum fornvosonum Takah. 



Aphelinus sp tphis rumicis L. 



Pachyneuron siphonophorae Ashm. Macrosiphum formosanum Takah. 



Proctotrupidae 



Lygocerus sp ( 'avariella neocaprea< Takah. 



Lygocerus sp MacrosipMcm alopocuri Takah. 



(Other animals) According to a paper by Davis (Psyche xxiri, p. 36), tl ■ 



( . [phis rumicis 



Ephedrus japonicua Ashm < 



( Brachysipliomei 



