A NEW MEALY BUG 



343 



Male. This article has been delayed four months in order to include 

 the description of the male, but after diligent searching not a single specimen 

 has been found. Undoubtedly some individuals shall be secured in the near 

 future and shall be described later. Demands for information concerning 

 this new species makes it impossible to withhold this matter longer. 



HOSTS PLANTS. 



Elder {Sa)iihiiciis glauca Nutt). This mealy bug was first observed upon 

 the elder trees growing in the "washes" near Santa Paula, Cal. Its presence 

 was first discovered by the aid of ants, which appeared in large numbers in 

 the cracks and wounds of the trees. When the rough exterior bark was re- 

 moved around these cracks and wounds, the mealy bugs were exposed in 

 rather limited numbers, but scattered over quite a large area of the tree. 



Figure 127. Pseudococcus bakeri on bark of walnut. 



In all cases they appeared to be feeding only upon the new formed bark, 

 or cambium layer, around the cracks and wounds, and were more or less con- 

 cealed from view by the rough outer bark. A few were observed crawling 

 on the outer bark, as if in search of a suitable resting place, but none were 

 found upon the foliage of the elder trees. It is very probable that this is 

 the native host plant, and it migrated from this to the deciduous fruit and 

 walnut trees in the surrounding neighborhood. 



Walnut (Jiiglans regia). This pest (if it may be called a pest) has been 

 found more extensively distributed upon the walnut trees than upon any other 

 host plant. Its work is the same upon the walnut as on the elder, but during 

 the months of .August and September, it was also found feeding upon the 

 stems of the growing nuts, liut never in any alarming numbers. It is more 

 readily found by watching the ants than by any flamage which it does to 

 the tree, or bv its numbers as is the case with most of the mealv bug's. 



