|g E. Takaliaslii. 



convex on the inner side which is furnished with some setae Antennae slender, 

 almost without hairs; the 1st joint much larger than the 2nd, somewhat iinbri- 

 cated, somewhat convex on the inner side : the -3rd not imbricated, provided 

 with about 40 rather small slightly protuberant circular sensoria scattered over 

 the whole length: the 4th somewhat imbricated, provided with alout 15 similar 

 sensoria scattered over the whole length: the 5th provided with 2-4 similar 

 sensoria not in a single row. the apical sensorium of medium size; the relative 

 length (4' joints about as follows: 111-95, IV-56, V-42, VI-118 (23 + 95). 

 Rostrum reaching the middle coxae. Abdomen almost without hairs on the 

 dorsum. Cornicles cylindrical, somewhat expanded at the base, scarcely dilated 

 mi the distal portion, not curved, slightly imhricated, almost as long as the 4th 

 antennal joint, about 3 times as long as the cauda. Cauda broadest at the 

 base, tapering, almost triangular in shape when seen from above, somewhat 

 longer than wide, with the apex pointed, with 2 pairs of lateral bristles near 

 the tip. The 1st and 2nd obliques on the front wing very slightly curved ; the 

 3rd twice forked, the upper branch extending to the tip of the wing: stigmatic 

 vein moderatly curved; hind wings with 2 almost parallel obliques; booklets 2. 

 begs long and slender: tibiae slightly more slender than the 3rd antennal joint. 

 provided with man)' moderately long setae; tarsi somewhat imbricated, hind 

 tarsi slightly shorter than the basal part of the 6th antennal joint. 



Length of body — about 1.5 mm. Antenna — about 1.6 mm. 



Fore wing — about 2.3 nun. Cornicle — about 0.3 mm. 



Host — Primus taiwaniana, attacking the lower side of the leaf. The 

 infested feaf is rolled. 



Distribution. — Formosa : Musha. 

 Japan 



Hitherto unrecorded from Formosa. 



-Many apterous and winged viviparous females were collected by the author 

 on May 15, 1924. 



Myzus varians Davidson. 



.11. Econ. Entom., v. p. 409 (1912); Takahashi, Aphididae of Formosa, 

 part 3. p. 29 (1924) 



Syn. Myzus tropicalis, Takahashi. Aphididae of Formosa, part 2. pp. 24 

 and 81 (192:1) and part 3. p. 27 (1924). 



