APR 29 1924 
A LIST OF THE APH1DIDAE OF JAPAN, WITH 
DESCRIPTION OF NEW SPECIES AND GENERA 
BY 
Prof. Shonen Matsumura 
Owing to the difficulty of preserving and making the preparation of a 
specimen, and still more to the polyphagous and polymorphic characters of 
the Aphides, the Japanese Aphides have not been studied thoroughly by any 
entomologist. In 1900 Prof. Chujiko Sasaki " published in the Japanese 
language the result of his studies on some of our Aphides, among which was 
one new species. In the same year I 2 ' also wrote a paper on some Japanese 
Aphides in our own language. In 190S Prof. Ginji Okajima wrote about 
two new and one known species of Trichosiphum under the title of "Contribu- 
tions to the Study of Japanese Aphididai?* in the Bulletin of the Agricultural 
College of Tokyo, Vol. VIII, p. 1-8. 
According to our present knowledge, the Aphides injurious to cultivated 
plants are mostly cosmopolitan, being very easily introduced into new count- 
ries with their host plants. The present study is restricted mainly to the 
Aphides which attack our indigenous plants. 
The present list contains 8i species and 29 genera, among which 57 
species and 1 5 genera are new to science and I shall describe them on this 
occasion. 
In describing the species and genera I have used the following two new 
terms for convenience : 
Anterhinarial — The distal part of the apical joint of the antennae, which 
1) Nippon Nosnkulmtsu-Gaichu-Hen p. 428. 
2) Dainippon-Gnichu-Zensho. 
[Jour, of the College of Agr., Tohoku Imp. Univ., Sapporo, Vol. VII, Pt. 6, July, 1917] 
