A LIST OF THE APHIDIDAE OF JAPAN, WITH DESCRIPTION 405 
examined it closely under the microscope, but did not find any other charac- 
ter than those of Myzus Pass. 
47. Phorodon asacola n. sp. 
Winged viviparous female — Body oblong, green or greenish yellow; an- 
tennae somewhat shorter than the body, brown, frontal tubercles on the inner 
side with a long narrow tooth, carrying 2 capitate hairs, the first joint on the 
inner side also with a long, blunt tooth, carrying some capitate hairs, ante- 
rhinarial nearly 4 times as long as the postrhinarial, the 3rd joint shorter 
than the 6th ; head and protiotum pale yellow, with 3 large brownish spots 011 
the mesonotum ; wings hyaline, veins ochraceous, stigma grayish white, 2nd 
furcal near the middle of the first; abdomen oval, cornicles very long, reach- 
ing nearly to the middle of the cauda, cylindrical, near the apex scarcely 
dilated ; cauda conical, about 1 /6 the length of the cornicles ; legs yellow, 
tibiae at the apices and tarsi, fuscous. 
Length of body 2 mm.; exp. tegm. 5.4 mm,; antennae 1.6 mm.; corni- 
cles 0.4 mm. 
Apterous viviparous female — Body oblong, green or greenish yellow; 
antennae yellow, the 5th at the apex and 6th, fuscous; antennal teeth on the 
innerside at the base and other characters nearly the same as those of the 
winged female ; cornicles much longer, narrower at the apices ; cauda broad, 
conical, with the cornicles pale yellowish. 
Length of body 2.2-2.5 mm.; antennae 1.2 mm.; cornicles 0.7 mm. 
1 lab. — Hokkaido (Sapporo). 
F. P. — Cannabis sativa. 
Nom. Jap. — Asa-ibo-abura. 
10. Arimakia n. g. 
Allied to Aphis L., from which it may differ as follows: 
Body with long hairs; frontal tubercles distinct; antennae robust, the 
6th joint much longer than the 3rd; cornicles small, short, subequal to the 
