79 



arinulations; rostrum reaching to the 3rd coxae; cornicles very short, 

 represented as pores, cauda short, somewhat conical, lower genital plate 

 broad, rounded; wings ample, with the forked media, obsolete at the 

 bases, stigma fusiform, opening nearly in the middle of the stigma; 

 legs short, the hind legs not much longer than the anterior 2 pairs. 



We have in Japan the following one species. 

 Genotype - Eriosoma laniger Sam. 



This genus was established by Samoulle for Aphis laniger a of Haus- 

 mann, but his description was insufficient and for a long time it was 

 neglected and this species has been treated under Schizoneura of Hartig. 

 It differs from Schizoneura, which was estarblished by Hartig for 

 Aphis ulmi L., in having the ringed 5th and 6th antennal joints and 

 the shorter 6 th. 



1. Eriosoma laniger Haus. 



Aphis lanigera Hausman, 111. 1, p. 440 (1802). 

 Coccus Mali Bingley, Anim. Biol. Vol. Ill, p. 200 (1803). 

 Erisoma laniger Samouelle Ent. Useful compend. P. 232 (1819). 

 Myzoxyle lanigera Blot Mem. Soc. Linn: Calvados, I. P. ? 



(1824). 

 Myzoxylus lanigera Blot Mem. Soc. roy. agr. Caen. Ill, p. 332 



(1830). 

 Schizoneura lanigera Hartig. Germ. Zeit. Ent, III, P. 367(1841). 

 Myzoxylus niali Am. Serv. Hem. P. 612 (1843). 

 Schizoneura aniericana Biley, Bull. U. S. A. Geol. & Geog. Serv. V. 



P. 4-9 (1879). 

 Winged viviparous female - Body oblong, dark brown, approaching 

 to black, prothorax rather paler; antennae short, the 3rd joint longer 



