THE MONTHLY BULLETIN. 



123 



Distribution — Specimens of this mealy bug have been collected by the 

 writer at Santa Paula, Ventura County, and Upland, San Bernardino 

 County, and has been received on potatoes from Stockton, San Joaquin 

 County, Cal. 



THE VERBA SANTA MEALY BUG. 



rstudococcits yciba-saiitw Essig. 

 (Fig. 36.) 



Color — Body light yellow, completely covered with a very fine white 

 powdery wax. 



Eggs — Pale yellow laid in an ovisac which entirely encloses the female. 



Fig. 36. — The yerba santa mealy bug. Pseudococcus yerha-santcr , on leaf of yerba 

 j>innta. Young adult females and ovisacs. (Author's illustration.) 



Filaments — The anal and lateral filaments are of about the same 

 length and very short and inconspicuous. 



Food Plant — Abundant upon the leaves of yerba santa or mountain 

 balm (Eriodictyon calif ornicum) . 



Distrihidion — Sespe Canyon, Ventura County, Cal. It has only been 

 reported from this locality. 



THE DIPLACUS OR YUCCA CEROPUTO. 



Ceroputo yiiccw (Coq.). 



(Figs. 37-38.) 



Though not a true mealy bug of the genus Pseudococcus this insect 

 is included here because of its great resemblance to and confusion with 

 the mealy bugs. So far it has proven to be of no economic importance 

 but may become so at any time. 



Color — The body is light yellowish and covered with thick plates of 

 w^hite cottony wax. It is larger than the ordinary citrus mealy bug, 

 being a little more than three eighths of an inch long. 



Eggs — No eggs are laid, as the young are born alive. 



Filaments — The lateral filaments are about one fourth as long as 

 the width of the body and the anal filaments are slightly longer than 

 those on the sides, as shown in Fig. 38. 



