THE GENUS PSEUDOCOCCUS IN CALIFORNIA 



E. 0. fiSSIG. 



Pseudococcus agrifoliae Essig 



The description of this form on page 42, Vol II, of the Journal applies 

 to the winter form. After close study I find that there are two forms; a sum- 

 mer and a winter. The winter form as described is viviparous, has antennae 

 with 7 short articles, legs with femur and tibia nearly co-equal. I am includ- 

 ing the drawings of the leg and antennae of the summer form and a rough 

 outline sketch of a winter form showing the chief characters (Fig. 60). 



Figure 60. Pseudococcus agrifoliae. A, summer form with youngi B, antenna 

 of same; C. leg of same 



Summer Form — Antennae (Fig. 60 B) — 8-articled and normally hairy. 

 The respective lengths of the articles beginning with the longest are : (2 and 

 8), 3, (1 and 5), 4, 6, 7. These characters would throw the form in F or FF 

 in the provisional key, on pages 36-37, Vol. II, of the Journal. 



Legs (Fig. 60 C), are normal with few hair. Tibia nearly twice as long as 

 femur, and three times as long as the tarsus. In the anal lobes or pygidium, 



