1(5 K. Takahashi. 



Rostrum ifiicliing beyoiul the middle coxae. Cornicles stout, not 

 reaching the caudal apex, slightly expanded on the basal half, 

 imbricated, and reticulated on the distal half. The 3rd olilique of 

 fore wings nearly extending to the wing apex; hind wings with 2 

 oliliques nearly parallel; booklets o. 



Cauda a little shorter than the cornicle, furnished with about 6 

 pairs of lateral bristles. Legs long and slender, with, many ratlier 

 long bristles; tarsus imbricated. 



Length of body — 1.5 mm. Antenna — L6 mm. 

 Cornicle — 0. 3 m m . Fore wi ng — L 75 m m . 



Host. — Artemisia capillar is. 



Distribution. — Formosa (Taihoku, Giran, Kagi, Ako). 



This new species may be distinguished from 31. artemisiae (Pass.) 

 hy tlie colour of the body. 



The winged form is not I'are. The sexual forms do not appear 

 through the year near Taihoku. 



Tliis species and ITacrosiphum neoartemisiae Tak. are sometimes 

 found together on the host plant. 



Macrosip/ioniclla sanborni (Gillette). 



llacrosiphum chri/santhemi, Sanborn, Kansas Univ. Science Bull. 

 iii, i. p. 73. pi. xvii. fig. 85 (1904). 



llacrosiphum sanborni, Gillette, Canad. Ent. L, p. 65 (1908); 

 Fullaway, Ann. Kept. Hawaii Agr. Expt. St. for 1909, p. 2G (1910); 

 Gillette, .loui-. Econ. Entom., iv, p. 385 (1911): Das, Mem. Ind. 

 Mus. vi, 4. p. U;.3, pi. xi (1918). 



Macrosqjhoniclla chrysanthemi, Del Guercio, Redia, vii. p. 332, 

 fig. 30 (I'.ni); Theobald, Bull. Ent. Research, vi, pt. 2, p. 112 

 (1915). 



Macrosiphoniella bedfordi, Theobald, ]>ull. Ent. Res., iv, p. 318, 

 fig. 4 (1914). 



