i03 K- Takahashi 



Length of botiy-aljout 2M iiini. Autenna-about 3.0 mm. 

 Coruicle-about 0.58 mm. 



Winged vivij)arous fem^ilc. 



Frontal tubercles largr, somewhat convex on tlie inner side. Antennae long 

 and slender, with some moderately long normal setae; the 3rd joint provided with 

 about 20 moderate or rather large somewhat protuberant circular sensoria arranged 

 almost in a row nearly over the whole length; the 4th somewhat imbricated, without 

 sensoria; the relative length of joints about as follows: III-180, IV-12o, V-105, 

 VI-230 (30 + 200). Eostrum reaching the middle coxae. Wings hyaline, with 

 normal veins. Abdomen with some moderate or rather long setae. Cornicles large, 

 stout, cylindrical, somewhat expanded toward the base, not dilated at tlie base, not 

 curved, imbricated, not reticulated, about twice as long as the cauda, about 5 or 

 more times as long as wide, almost as long as the 4th antennal joint. Cauda much 

 "longer than wide, gradually tapering, rather stout, with about 4 pairs of long lateral 

 bristles. Legs long and slender; tibiae somewhat stouter than the antenna, provided 

 with many rather long normal setae; hind tarsi a little longer than tlie basal part of 

 the last antennal joint. 



Length of lx)dy-alx)ut 2.7 mm. Antenna about 3.5 mm. 



Fore wing-about 4.0 mm? Cornicle-about 0.6 mm. 



Host.-Smi/ax chinensiti. 



Distributiou.-Japan: ToJ^yo, Oi in Gifu prefecture, Kyoto. One winged and 

 ^ few wingless forms were collected by the autlior in June, 1923. 

 : This aphis can be easily distinguished from itL xmllncifoliac Takaii. (Aphi- 



didae of Formosal, p. 12) by tlic nature of the cornicles which arc stouter and not 

 ,retJQulated. 1 



i!Ht)«^t!iL ,: Myzus rhois n. sp. 



;.;«oI -Mifi'-: Wingless viviparous female. 



-'■•«!' -'SlMning brown. Corni -Ics black. Antennae black, witJi tlie 3r<l joint brown- 

 5igh.,' Femora except tlie bases black, tibiae with black apices. Body oval. Eyes 

 •iaoderate in sm-. Front.d tubercles short, distinctly convex on the inner side. 

 Antennae rather stout, imbricated, almost witliout hairs; the 1st joint much larger 

 iM,n the 2ndj sliglitly convex on the inner side; the 3rd provided witli 1-3 small 

 '(^iWnW sensoria near the base; the 4tli witliout sensoria; the 5(ii \\i(ii tlie usual 

 seusorium rather small placed near the ti]»; tlie relative length of -joints alout as 



