THE CANADIAN ENTOMOLOGIST 



77 



TWO NEW SPECIES OF APHIDID.t FROM JAPAN. 



BY RYOICHI TAKAHASHl, 

 Forest Experiment Station, Meguro, Tokio, Japan, 



Stomaphis pini, n. sp. 



Winged viviparous female. 



Head, antennae, eyes, thorax, legs, cornicles and cauda black. Abdomen 

 nearly pale brown, above blackish, darkest at the part between the cornicles, 

 and with a dark brown spot on the under side of each segment. Wings some- 

 what dusky, stigma and veins black, veins shadowed. Body long and rather 

 narrow, nearly parallel-sided, and with many fine hairs. Head very short, 

 compound eyes rather small, supplementary eyes visible. Antenna? somewhat 

 slender, with many hairs, the first joint longer and broader than the second. 

 The relative lengths of the 3rd and the following joints are as follows: 



HI 74, IV 30, V 27, \T 38. 



The third joint has about fifteen very large sensoria on the entire length, 

 the fourth about 4 and the fifth only the usual one. 



Wings slender, stigma large, the third oblique, twice forked, stigmatic \'ein 

 extending to the apex of the wing, the second oblique of the hind wing very long 

 hooklets five in number. The ninth abdominal segment with a small tubercle 

 on the side. Cornicles very short. Cauda short, with many hairs. Legs 



' oj 



Fig. 13. — Stomaphis pini, n.sp., winged viviparous 



female; antenna (tlie 3rd to 6th joints) 



and fore wings. 



Fig. 14. — Brachycolus gramini, n.sp., winged 

 viviparous female. 1. Cauda. 2. Cornicle. 

 3. Antenna. 4. The 3rd antennal joint 

 of a female. 



slender and long, hind legs much longer. Length of bodv .3.5 mm. Antennse 

 2.3 mm. Rostrum U.O mm. Hind leg 5.4 mm. Fore-wing 5.5 mm. Hind 

 wing 3.5 mm. Width of fore-wing 1.5 mm. 



Host. — Piniis densi flora. 



Type locality. — Tokio, Japan. 



Many winged viviparous females which are probabh' sexupara?, are found 



in November. 



Brachycolus gramini, n. sp. 



Wingless viviparous female. 



Body black, somewhat greenish, densely covered wirh a white powder. 

 Eyes, distal half of antenna, cornicles, cauda, femora except distal half of the 



April, 1920 



