Aphididae of Formosa. — I. 69 



Subtribe Cervaphidini. 

 Cervaphis quercus Takahashi. 



Zool. Mag. Tokio, p. 458 (1918). 



Host. — Quercvs vm-iabilis. 



Distribution. — Formosa (Taihoku); Japan (Tokio). 



Hitherto unrecorded from Formosa. 



In m}' opinion, Anomalaphis Baker does not belong to this 

 subtribe, and Cervaphidini is closely related to Trichosiphini in the 

 following characters: 



(1) Head and pronotum of the wingless female not well defined, 

 often fused together. 



(2) Ocular tubercles of the winged form ver}- prominentl_y pro- 

 /^ tuberant. 



(3) Cornicles very long, projecting horizontally behind, provided 

 with bristles. 



(4) Caudal segment sometimes with a process. 



(5) Spiracles sometime prominently protuberant. 

 (G) Oviparous females winged. 



(7) 2nd obliques of fore wings curved. 



Tribe Callipterina. 

 Key to subtribes. 



(1) Eyes without ocular tubercles '^uhivihQ Saltusaphidmi. 



Eyes with ocular tubercles (2) 



(2) Antennae provided witli many long, prominent hairs; anal plate 



not sinuted Subtribe Ghaitophm-ini. 



Antennae not provided with many long hairs; anal plate often 

 bilobed (3) 



(3) Cornicles as long as or longer than wide. Subtribe CaUlpterini. 

 Cornicles much shorter than long (4) 



(4) Eyes of the wingless female very small and rudimentary 



Subtribe Neophyllaphidini. 



