310 Vnwersity of California Publications [Entomology 



The legs are quite long, dusky yellow with almost black femora 

 which have rather prominent oval or circular pale areas showing 

 specially well in the mounted specimens. The thorax is yellow 

 or dusky with brown or black muscle lobes. The abdomen is 

 yellow with black spots along the margins and numerous black 

 patches on the dorsum usually arranged in transverse rows. The 

 cornicles are short and dusky yellow. The cauda and anal plates 

 are from dusky to pitch black. Short spines arise from the dusky 

 areas on the dorsum, being arranged in longitudinal rows. 



HOST PLANTS, LOCALITIES, DATES AND COLLECTORS 



1. Bamboo, Arundo, sp.,* Berkeley, Cal., 1903. W. T. Clarke. 



2. Bamboo, Arun din aria japonica S. & Z., U. C. Campus, Berkeley, 



Cal., 1916. Different forms taken by the writer as follows: 



Firgogeniae — Abundant on the undersides of the leaves 

 throughout the summer and fall. Those described were col- 

 lected on June 1 and July 17. 



Sexitparae — Quite numerous in the late fall. Collected Nov. 

 28 and 29 and Dec. 28. 



Sexuales — The females abundant from the last of October to 

 the first of December and a few stragglers remaining until 

 after January 1. Collected Nov. 28 and 29 and Dec. 28. The 

 males not abundant at any season, but most numerous about 

 the middle of November. Collected Nov. 28, and 29. None 

 were to be found as late as Dec. 28. 



Eggs were laid the last of October and a few still being 

 deposited in late December, but on Dec. 28 very few freshly 

 laid eggs could be found, practically all having already 

 assumed the shinv black color. 



■* This plant is undoubtedly Arundinarin japonica S. & Z., which is the 

 common species infested on the campus where the type specimens were 

 also taken. 



