14 E. Takaliashi. 



relative length of joints as follows: III-60, IV-55, V-52, VI-96 

 (20 + 76). Rostrum reaching to the middle legs. Cornicles as in tlie 

 wingless form. Cauda slender, with about 8 pairs of long lateral 

 bristles. Legs long, furnished with numerous moderately long bristles. 

 The 2nd and 3rd obliques nearly parallel; the fork of the 3rd 

 extending to the wing apex; hind wings with 2 (il)liques not parallel; 

 booklets 5. 



Length of body — 1.7 mm Antenna — 2.0 mm. 



Cornicle — 1.0 mm. Fore wing — 2.3 mm. 



Width of lore wing — 0.9 mm. 

 Host. — Artemisia capillaris. 

 Distribution. — Formosa (Taihoku, Shirin). 



The wingless and winged viviparous females are found almost 

 always throughout the year near Taihoku. 



Key to species of Ifacrosiphoniella. 



(\) General colour green M. tanacetarium (Koch.) 



General colour black or brownish red (2) 



(2) Wingless viviparous females with one sensoria near the l>ase of 



the 3rd antemial joint M. citricola v- d- Good. 



Wingless viviparous females with about 5-8 sensoria on the 3rd 



antenna] joint. M. formosartemisiac n. ^p. 



Wingless viviparous females with about 20 sensoria on the 3rd 

 anten nal joint ; M. sanbonii (Gillette). 



ifacrosiphoniella citricola van der Goot. (PL. IIL 1). 

 Coutrib. Fauna Indes Neerlandaises, i, IIL p. 31(1917). 

 Host. — Cinnamomum sp. ; Lasianthus sp. 

 Distribution. — Formosa (Taihoku, Urai, Toyen); Java (v. d. G.); 



Singapore (v. d. G.). 



Collected by the late Mr. L Nitobe on Cinnamomum sp. 



Hitherto unrecorded from Formosa. 



