312 NEW YORK STATE MUSEUM 



siderable numbers in an infested orchard near Albany. The beetle, in 

 its various stages, is represented in the accompanying figure. It is 

 quite convex in shape and only -jV of an inch long. The twice stabbed 

 lady bug, Chilocorus bivulnerus Muls., is another native form 

 known to feed on this pest. The beetle may be recognized by its jet 

 black color relieved by two red spots on its wing covers. Several lady 



Fig. 5 Pentilia misella a beetle; 6 larva; cpupa; d blossom end of pear showing 

 scales with larvae of Pentilia feeding on them, and pupae of Pentilia attached within 

 the calyx— all greatly enlarged. (After Howard, U. S. dep't. agric. div, ent. Bui. 3, n. 8. 1896> 



bugs introduced into California were colonized on trees infested with San 

 Jos6 scale, and of these, three have since been discovered feeding on the 

 pest. They are Ore us chalybeus, O. australasiae and 

 Scymnus lophanthae. 



A fungus disease, Sphaerostilbe coccophila Tul., attacks 

 this pest, and in some localities it has killed a considerable number of the 

 scales. Prof. P. H . Rolfs credits this organism with practically exter- 

 minating the pernicious scale in one Florida orchard and with reducing 

 by considerable the numbers of the pest in others. It is undoubtedly a 

 native of Florida, as it is very common onAspidiotus obscurus 

 Comst. This fungus was cultivated, and new colonies of scales infested, 

 but unfortunately, like other fungi it is very dependent on favorable 



