Aplildulap of Formosa. — 3. 105 



(Irical, not curved, scarcely or slightly expanded toward the base, not expanded at 

 tlic luso, imbricated, not reticiditcd, about 3 or 4 times as long as wide, ,alx>nt 3 times 

 as long as the cauda, almost as long as the 4tli antennal joint, furnished witli a few 

 sliort scarcely knobbed setae. Cauda stout, almost as long as wide, iapering on the 

 distal half, with the apex rather pointed, with about 3 pairs of long lateral bri- 

 stles. Legs long and slender; tibiae almost as stout as the antenna, but much more 

 slender than the cornicle, with many long setae which are not knobbed; hind tarsi 

 as long as the cauda or the basal part of the last antennal joint. 



Length of body-about 1.7 mm. Auteuna-about 1.4 mm. 



Fore wing-about 2.4 mm. 



Brachypterous viviparous female. 

 Differs from the wingless form in the following characters: 



(1) Ocelli present, but much smaller than those of the macropterous form. 



(2) The 3rd antennal joint provided with about 20 very small circular sen- 

 soria scattered over the whole length; the 4th with about 10 similar sensoria; the 

 5th Avith 2 similar ones and an apical larger sensorium. 



(3) Mesothorax somewhat elongated, convex on the sides. 



(4) Brachypterous. 



(5) Length of body about 1.7 mm. 



Body covered with many minute granidar spinules as in the wingless firm. 



Only one specimen was collected. 



Host.-Prumui Jonariu7n. 



Distribution. -Japan (Tokyo, Oi in Gifu-prefecture), Formosa. 



Many specimens were collected by the author in the rolled leaves of the host 

 on June 6, 1923, at Oi, Gifu-prefecture, Japan. 



Neophorodon rubi Takaii. 



Aphididae of Formosa-2, j.p. 17 and 84 (1923). 

 Wingless viviparous female. 



Wliite. Eyes black. Antennae dusky, p.\ler at the base? Cornicles wiiite, 

 witli dusky tips? Cauda white. Body oval, provided with many long capitate 

 liairs, each arising from a very small tubercle on the dorsal surface, as in specimens 

 from Formosa. Frontal tubercles distinct, slightly convex on the inner side, which 

 is provided with 2 longer capitate hairs. Eyes distinctly protruding, with largo 

 ocular tubercles. Antennae slender, piovided with a few very sliort stout capitate 

 hairs; the 1st joint much larger tlian the 2nd, on tlie inner side with a arge 



