1 12 m-itamizMn 7^*f-7+=7->m\--'^'±-rz,~ig'm^\-JAx 



Oestlund, but it (Jiffcrs from the latter in the relative length of base and 

 unguis of VI antennal joint, also in the structure of the thoracic horn. This 

 aphid is also ijuitc distinct from ÄftL conalmn Takaiiasiii by the structure of 

 the cornicles wliich are much longer than tarsi and conspicuously flanged, as 

 well as by the large number of the secondary sensoria on IH antennal joint. 

 Co types — Deposited in the Hokkaido Agricultural Experiment Station. 



Uoraphin Matsumura et Hoki, n. g. 



(Alate viviparous female) — Body with no prominent hairs. Head pro- 

 vided with some moderate sized horns on the front. Frontal tubercles absent. 

 Eyes with small ocular tubercles. Antennae short, four or five jointed, armed 

 with annular sensoria over the whole length ; each of I and II has a short 

 hair ; unguis of last joint very small. Rostrum very short reaching Only to 

 the first coxae. Fore-wings with the 3rd oblique (M) simple, stigmal vein some- 

 what curved ; hind wings with one oblique vein (M). Cornicles present merely 

 as a ring ; cauda knobbed with several irregularly sized hairs. Anal plate 

 bilobed, provided with several long hairs. 



(Pupa) — Body provided with many bristles, evidently pulverulent. Head 

 with two prominent long horns, as in the genus Oregma. which are tapering 

 toward the apices and curved somewhat inwardly, being far separated from 

 each other. Antennae four jointed, strongly excurved in the last joint, with an 

 apical obscure fringlet sensorium with a long hair on the outside of the last 

 joint. Cornicles similar to the alate form. Cauda and anal plate rounded, 

 with many long hairs. 



Genotype — DorapJds popnli Matsl'Mura et HoRi, n. sp. 



DiiraphiH popuU Matsumura et Hori, n. sp. (Fig. II, a-i.) 



(Alate viviparous female) — General colour purplish brown, with three 

 large bands on the back in front of cauda. Head with two horn-like tubercles 

 on the frontal margin ; eyes large. Antennae very short, four and five jointed, 

 armed with annular sensoria over the whole length ; each of I and II furnished 

 with a moderately long hair. In the case of four jointed, III the longest, as 



