COCCIDAE FROM LOWER CALIFORNIA 



131 



Habit. Occurring on the bark of the host, those on pine being 

 chiefly on the smaller twigs, the dorsal scale becoming detached very 

 easily. Scale of female circular, about 2 mm. in diameter, black, flat, hard 

 and brittle. Ventral scale very thin. Scale of male not identified. 



Morphological characteristics. Adult female (Fig. 52E) of the 

 usual turbinate form, the derm membranous except for the anterior por- 

 tion of the cephalothorax, which tends to be more or less heavily chiti- 

 nized anteriorly. 



Fig. 52. Chrysomphalus induratus n. sp. : A, pygidial margin; C, antenna of 

 first stage; D, pygidial margin of first stage; E. adult female. Chrysom- 

 phalus lilacinus Ckll. : B, pygidial margin of adult. 



Pygidium (Figs. 51, 52 A) rather acute, the median lobes promi- 

 nent and rounded, the second and third consisting of but little more than 

 slight projections. Paraphyses well developed, arranged as follows: a 

 rather long paraphysis at inner basal angle of each median lobe and one 

 about twice as long at the outer angle ; one at each angle of second lobe, 

 the inner of these the longer but not exceeding half the length of the 

 outer paraphysis of the median lobe ; one very small, between the second 

 and third lobes, followed by one about as long as the longest of the 

 median paraphyses and one less than half as long at base of third lobe ; 

 two beyond the third lobe. Plates entirely lacking. Ducts long and 

 slender, few, their pores confined to a marginal area beyond the third 

 lobes. Anal opening small, slightly cephalad of the median paraphyses. 

 Ventral side with a few very small ducts. Paragenital pores lacking. 



