40 



SCALE INSECTS OF SANTA CRUZ PENINSULA 



Body form globular, the venter being deeply intussuscepted and forming a 

 marsupium for the retention of the eggs. Infesting, as far as known, 

 only coniferous hosts. 



Notes: The loss of the anal plates at the final ecdysis appears to have been 

 overlooked by earlier writers, only a single author 4 having noted the fact and this 

 without comment. The absence of these plates has been established only in P. 

 piceae (the type of the genus) and P. insignicola, but it may safely be assumed 

 that the remaining species of the genus are similar. 



Physokermes insignicola (Craw). 



Fig. 17. 



Originally described from this area where it is something of a pest 

 on the Monterey Pine (Pinus radiata). 



This species has been the subject of an extensive paper by Moulton in 

 which, unfortunately, its morphology has been but inadequately dealt 

 with. I append the following notes. 



*_OI 



Fig. 17. Physokermes insignicola (Craw) : A, antenna of adult female; B, leg of 

 adult female ; C, anal plates of second stage ; D, anal region of adult ; E, dor- 

 sal pore; F, marginal spines from region of stigmatic depression of second 

 stage female. 



Adult female, taken before the chitinization of the derm has set in. 

 Legs and antennae present, the former (Fig. 175) very short and stout, 



* Fenton, F. A., Can. Ent., 49:320. (1917) 



