COCCIDAE 195 



Gymnococcus Douglas 

 G. agavium (Dougl.). NYC (USEE). On Agave spp. 



Dactylopius Costa 

 D. indicus (Green). NYC (USEE). On Opuntia sp. in greenhouse. 



Phenacoccus Cockerell 



P. acericola (King). False Maple Scale. Numerous records covering a series 

 of years indicate the common occurrence of this insect in the Hudson Val. 

 northward to Troy. Sometimes very abundant on hard maple, and erroneously 

 referred in earlier years in this country to Pseiidococciis aceris Geoff. Also 

 reported from Johnstown, Oneonta, and Eatavia, indicating a wide distribution 

 and suggesting that the area of greatest injury is in the southern part of the 

 Hudson Val. The U. S. Bur. Ent. has many records throughout the State. 

 On maple, hornbeam, lime, and horse-chestnut. 



P. dearnessi King. Albany (USEE). On Crataegus. 



Trionymus Eerg 

 T. americanus (Ckll.). Earneveld (USEE). 



PSEUDOCOCCUS Westwood 



P. adonidum (L.) (frequently referred to as longispinus) . A common mealy-bug 

 recorded from Ithaca, Albany, and one LI locality and Brooklyn, in green- 

 house (USEE). Like citri, it is probably widely distributed throughout the 

 State on a considerable variety of subtropical and tropical plants. 



P. citri (Risso). Citrus Mealy-Eug. This common mealy-bug of the greenhouse 

 is represented from Ithaca, Albany, LI (Maspeth, Brooklyn, Flushing), on 

 many plants (USEE). This must be only a very small fraction of localities 

 in the State where this insect occurs, since it is presumably world-wide in 

 distribution and occurs on a very large variety of tropical and semitropical 

 plants. 



P. comstocki (Kuw.). Palisades, NYC, SI, and LI (Brooklyn, Mineola, Bayside) 

 (all USEE). On a variety of plants. 



P. gahani Green. NYC (USEE). On ampelopsis. 



P. ledi Ckll. Oneida, HDHouse (NYS) ; Sand L., Rensselaer Co (Ckll-CU). On 

 Ledum groenlandicum. 



P. maritimus (Ehrh.). NYC (USEE). On a variety of plants. 



P. nipae (Mask.). Coconut Mealy-Eug. New Rochelle, NYC (USEE); LI: 

 Locust Val. (USEE). On a variety of plants in the greenhouse. 



P. trifolii Fbs. Clover-Root Mealy-Eug. Ithaca (CU). On roots of red clover. 



RiPERSIELLA Tinsley 

 R. maritima (Ckll.). LI: Sea Cliff (USEE). On roots of Spartina. 



