Aphididae of Formosa. — I. 39 



Essig, Pomona Jnor. Ent., iii, p. 523(1911); Herrick, Jour. Econ. Eat. 

 iv. p. LMO(llill); Theobald, Bull. Eat. Res., iv, p. 32U(1914): Maki, 

 Agr. Expt. St. Formosa, Hull. 103 (19 K')); Matsumura, Jour. Coll. Agr. 

 Bappoi'o, vii, pt. 6, p. 356(1917); Essig and Kuwana, Proc. Calit. Acad. 

 Sc, viii, 3, p. 68(191S); Swain, Univ. Calif. Pulj. iii, 1, p. 95(1919). 



iSipkocoryne bra>islcae, van der Goot, 'rijdsclirift vooi' Entoni. p. 

 93 (1913). 



Brevlconjne brasslcae, van der Goot, Beitriige Kenntnis HoUaad. 

 Blattl. p. 246(1915); Das, .Menu. Ind. Mus. vi. p. 187(1918); Baker, 

 U. S. Dept Agr. Bull. S2(;. \^. 45 (1920). 



m^m- Am^M^^^mm'^ c^^t) no. s. p. nu (:>cje-^) 



Hosts. — Brassica spp. 



Distribution. — -Formosa (Taihitku); Japan (Tokyo, Sapporo); 

 India (Das and Lefroy); Hawaii (P^illway); Australia (Froggatt); 

 Africa (riieobald); Europe; North America. 



I have never seen this species from Formosa. 



Yamataphis Mats. 



Body with some stout hairs. Eyes with prominent ocular tuber- 

 cles. Frontal tubercles very short. Antennae 5-iointed; spur longer 

 than the base; sensoria normal in shape. Fore wings with the 3rd 

 oblique twice forked; hind wings with 2 obliques. Abdomen without 

 dorsal tubercles. Cornicles much longer than the cauda, somewhat 

 swollen. Cauda wedge-shaped. Tarsi normal. 



This genus may be distinguished from Brevicoryne Das h\ the 

 5-iointed antennae. 



Type — Ymnataphis oryzae Mats. 



Yamataphis papaveri n. sp. (PL. xiii, 2, figs. 4-6) 



Winged viviparous female. 

 Black. Eyes and antennae black. Wings hyaline, veins dark 

 brown, stigma blackish. Cornicles and cauda blackisli. Femora 



