UNIVERSITY OF CALIFORNIA PUBLICATIONS ' 



TECHNICAL BULLETINS 

 College of Agriculture, agricultural Experiment Station 



ENTOMOLOGY 



Vol. I, No. 7, pp. 301-346 July 20, 1917 



APHIDIDAE OF CALIFORNIA^ 



NEW SPECIES OF APHIDIDAE AND NOTES FROM VARIOUS 

 PARTS OF THE STATE, BUT CHIEFLY FROM THE 

 CAMPUS OF THE UNIVERSITY OF CALI- 

 FORNIA, BERKELEY, CALIFORNIA 



BY 



E. O. ESSIG 



CONTENTS PAGE 



Introduction 302 



Description of new species 302 



Myzocallis arundinariae, n. sp 302 



Winged viviparous female — virgogenia 303 



Hosts, localities, dates and collectors 305 



Cotypes 305 



Myzocallis arundieolens (Clarke) 305 



Winged vipiparous female — virgogenia 305 



Sexupara 306 



Sexuales 307 



Female 307 



Eggs 307 



Male 308 



Hosts, localities, dates and collectors 310 



Symydobius agrifoliae, n. sp 311 



Apterous viviparous female — virgogenia 311 



Winged viviparous female — virgogenia 312' 



Host plant, localities, dates and collectors 313 



Myzus aquilegiae, n. sp 314 



Apterous viviparous female — virgogenia 314 



Winged viviparous female — virgogenia 315 



Host plants, localities, dates and collectors 317 



Aphis cari, n. sp 317 



Apterous viviparous female — virgogenia 318 



Winged viviparous female — virgogenia 319 



Host plants, localities, dates and collectors 320 



Notes _ 321 



1 This paper is No. NI in the author's series "Aphididae of Califor- 

 nia," published in the Fomona Jmtrnal of Entomology and Zoology. 



