52 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Macrosiphum rudbeckiae (Fitch) 

 Figures 6 and 7 



Five collections of this species were made as follows : 



1. On Yomena, Boltonia indica Benth. (listed as Aster omoca 

 indica Bl.), Nishigahara, Tokyo, May 12, 1913. Collection 

 number 25. 



2. On Noazami, Cnicus japoniciis Maxim, (listed as Cirsium 

 japonicum DC), Nishigahara, Tokyo, May 12, 1913. Col- 

 lection number 26. 



3. Host plant not given. Nishigahara, Tokyo, June 5, 1913. 

 Collection number 72). 



4. On Kikyo (Japanese or Chinese Bellflower, Balloon 

 Flower), Platycodon grandifloriim DC, Tokyo, June 5, 

 1913. Collection number 75. These specimens were 

 smaller than normal. 



5. On Boltonia indica Benth., Nishigahara, Tokyo, Aug. 4, 

 1913. Collection number 102. 



In comparing this species with the descriptions and drawings 

 of the European, M. solidaginis (Fab.), it is found they are 

 certainly very close if not the same thing. It also appears to 

 be what Matsumura has determined as M. chrysanthcini Del 

 Guercio. 



Macrosiphum, species 



Apterous viviparous examples only of this species were 

 taken. The color is given as cobalt-lemon. The antennae are 

 very long, dusky or black with from 5 to 6 sensoria near the 

 base of article III. The basal third of the cornicles is yellow, 

 the remainder black. The length is about twice that of the 

 Cauda, which is pale. The length of the body is 2.5 mm., the 

 width 1.5 mm. Collected on Noazami, Cnicus japoniciis 

 Maxim, (listed as Cirsium japonicum DC), Nishigahara, 

 Tokyo, June 5, 1913. Collection number 72. 



