Vol.1] Essig. — Aphididae of California 305 



HOSTS, LOCALITIES, DATES AND COLLECTORS 



1. Bamboo, Arundo, sp., Stanford University, Cal., October, lf)08?. 



W. M. Davidson.3 



2. Bamboo, Arundinaria, sp.?, Carpinteria, Cal., July 20, 1911. C. 



W. Beers. 



3. Bamboo, Arundo, sp., San Jose, Cal., Oct. 15, 1911. W. M. 



Davidson. 



4. Bamboo, Arundinaria japonica S. & Z., Capitol Park, Sacramento, 



Cal., April 30, 1912. The writer. 



5. Bamboo, Arundo, sp.?, Exposition Park, San Diego, Cal., April 



27, 1916. A. F. Swain. 



6. Bamboo, Arundinaria, sp.?, Montecito, Cal., June 27, 1916. C. 



W. Beers. 



7. Bamboo, Arundinaria japonica S. & Z., Capitol Park, Sacramento, 



Cal., Dec. 14, 1916. The writer. 



The writer ha.s also had reports of its occurrence elsewhere in 

 Southern California but has not been able to verify them. 



In all cases the insects work on the leaves, usually the under- 

 sides, and produce sufficient honey-dew to cause considerable 

 smutting. 



COTYPES 



All of the descriptions made by the author have been from a 

 series of individuals which of course become cotypes. These have 

 been placed in the collections of the U. S. National Museum, 

 Washington, D. C, and the California Academy of Sciences, San 

 Francisco, Cal., while a good series in each ca.se has remained in 

 the author's collection. In case of the species herein described 

 they have been deposited as directed above. 



Myzocallis arundicolens (Clarke) 



WINGED YTYIPAEOUS FEMALE— YIRGOGENIA 



1. Clarke, W. T. (orig. desc). Can. Ent., vol. 35, p. 249, 1903, 



Callipterus. 



2. Essig, E. O. (host index), Pom. Coll. Jour. Ent., vol. 3, no. 2, 



p. 458, 1911, Callipterus. 



3. Essig, E. O. (list). Pom. Coll. Jour. Ent., vol. 4, no. 3, p. 263, 



1912. 



The color of the winged viviparous female is from whitish 

 to pale lemon-yellow with bright red compound eyes, a pitch 



3 The writer received a mounted slide of specimens taken by Mr. 

 Davidson at San Jose, California, which proved to be this species. These 

 specimens are probably the same as those which he also took at Palo Alto 

 as recorded above. 



