Aphididae of Formosa. — I. 67 



booklets 3. Abdomen witli a few short bristles on each side, these 

 shorter than those on the head. 



Cornicles ver_y long and slender, with many long bristles. Cauda 

 with a process. Legs long and slender, with many very long setae. 

 Length of body — 2.") mm. Antenna — V 

 Fore wing — 2. 7 mm. Width of fore wing — 1 .0 mm. 



Cornicle — 1-3 mm. 

 Host. — Ficus retusa; Fictis obscura. 

 Distribution. — Formosa (Taihoku; Urai). 



Greenidea talwana n. sp. (PL. vi, 2.). 

 Wingless viviparous female. 



Yellow. Eyes red. Antennae yellow: apex of the Tith, and the 

 6j^ joints dusky. Cornicles yellow, except the black apex. Caudal 

 segment concolourous with the remainder of body. Legs yellowish 

 l:)rown; tarsi dark brown. 



Body with numerous hairs that are not knobbed. Eyes rather 

 small. Antennae 5 or 6-jointed, with long bristles; the 3rd joint 

 lacking sensoria and imbricated; the relative length of joints as 

 follows: III-50, IV-13, V-16, VI-33(12 + 21). Head and prothorax 

 not well-defined. Rostrum slender, reaching beyond the hind coxae. 

 Cornicles long and stout, nearly equal in width through their length, 

 l)ut the apical portion gradually narrowed towards the tip; the surface 

 covered with many long bristles intermixed with many minute hairs 

 "at the apex and not furnished with " spinule-rows. " Last abdominal 

 segment rounded and not produced into a process. Legs slender, with 

 many long bristles. 



Length of body — 1.7 nun. Antenna — 1.2 mm. 

 Cornicle — 0.75 mm. 



Winged viviparous female. 

 Head brownish green. Eyes red. Antennae black, paler at the 



