INSECTS APEECTING GREENHOUSE 
AND ORNAMENTAL PLANTS 
CITRUS WHITEELY ( Dialeurodes citri Ashm, ) . . , . 
Alabama, J. M. Robinson (April ly): Observed on Cape-jasmine at Auburn 
on April 9 , 
Mississippi, C. Lyle (April 2})t Specimens on gardenia received from 
Lowndes County. 
CITRUS MEALYBUG ( Pseudococcus citri Risso) 
Nebraska, M. H. Swenk (April 15)j Complaints of mealybugs attacking house 
plants were received on April 3 from Erontier County, 
Arizona, C. D. Leber t (April 10 ): Heavy infestation found on coleus, 
begonia, pepper, and lantana in a greenhouse at Phoenix, Severe 
injury to many plants, 
OYSTERSHELL SCALE ( Lepidosaphes ulmi L, ) 
New York, R, ‘E, Horsey (April); Several small lilacs infested, some quite 
severely on April I 7 , at Rochester, N,Y, A seedling ash tree, I 5 feet 
tall, which sprouted up in a forest planting of Scotch pine, was two- 
thirds encrusted on April IS, 
Pennsylvania, G. B. Sleesman (April 17); Very common on birch, poplar, 
and lilac, throughout the Philadelphia section of Pennsylvania, C6a-- 
siderable damage to many trees and shrubs, 
Minnesota, A. G. Buggies (April I 9 ): Very abundant on "cotoneaster 
hedges at Saint Paul, 
COTTONY-CUSHION SCALE ( Icerya purchasi Mask,) 
Arizona. C. D. Lebort (April 15): Building up rapidly on pittosporura in 
the Phoenix area. No predators observed, 
BARNACLE SCALE ( Ceroplastes cirripediformis Comst.) 
Alabama, E,* E. Guyton (March 28): Eound infesting maple and dogwood at 
Auburn and Phenix City, Damage light, 
OLIVE SCALE ( Parlatoria oleae Colv, ) 
California, P, Simmons (April lO); Eggs present under scales on lilac and 
rose at laboratory on April 5« Examinations made April 6, 8, and 10 
revealed the first crawlers on April 10, on rose. 
