COCCIDAE FROM LOWER CALIFORNIA 129 



Genus CHRYSOMPHALUS Ashmead. 

 Chrysomphalus aonidum (Lin.). 



Previous records. A widely distributed tropical and greenhouse 

 species. 



Lower California records. From an undetermined ornamental at 

 La Paz. 



Chrysomphalus enceliae n. sp. 



Fig. 50. 



Type from a large composite, Encelia palmeri, in the canyon at 

 Todos Santos. 



Fig. 50. Chrysomphalus enceliae n. sp. : pygidium of adult. 



Habit. Occurring on the trunk of the host, sometimes concealed be- 

 neath loose bark. When not thus concealed the dorsal scale becomes very 

 easily detached, leaving the conspicuous white ventral scale. Scale of 

 female roughly circular, flat, black, hard and brittle, 2-3 mm. in diameter. 

 Scale of male not identified. 



Morphological characteristics. Adult female about 2 mm. long, of 

 the normal turbinate form, the anterior portion of the cephalothorax 

 tending to be quite heavily chitinized. 



Pygidium (Fig. 50) heavily chitinized, short and broad. Four 

 pairs of lobes present, the median pair quite large, the others mere pro- 

 jections, all rounded at the apex. Paraphyses well developed, rather short 



