24 



SCALE INSECTS OF SANTA CRUZ PENINSULA 



can easily be made out. The examination of specimens in this stage will 

 doubtless clear up many questions as to synonymy and should be regarded 

 as an essential part of any studies upon the genus. 



As far as I can discover the development of no species of this genus 

 has yet been carefully described. I am therefore discussing at some length 

 the development of Kermes cockerelli. 



Kermes cockerelli Ehrh. 



Figs. 9C, 10 and 11. 



Originally described from this locality. It has been taken only from 

 Quercus lobata. 



Habit (Fig. 9C). Entirely devoid of secretionary covering; color a 

 uniform light brown. There is a deep, median furrow along which there 

 is little or no indication of segmentation, but at the sides of the furrow 

 the intersegmental constrictions are very deep, causing the sides to be 

 extremely gibbous. 



Fig. 9. A, Kermes rattani Ehrh.; B, Kermes nigropunctatus Ehrh.; C, Kermes 

 cockerelli Ehrh. 



Morphological characteristics. Specimens of the adult female taken 

 before the derm becomes heavily chitinized (Fig. 105). Antennae (Fig. 

 1(L4) short and stout, obscurely 6-segmented with the third segment 

 longest. Legs likewise short and stout, but presenting all the normal 

 parts. Anal lobes represented only by a pair of weakly chitinized areas, 

 each of which bears several small spines. In fully grown specimens these 



