U. S. D. A., B. E. Tech. Ser. 16, Pt. II. Issued August 5, 1908. 



PAPERS ON COCCID^ OR SCALE INSECTS. 



NEW SPECIES OF DIASPINE SCALE INSECTS. 



By C. L. ]\L\RLATT, M. S., 

 ~" Entomologist and Assistant Chief of Bureau. 



INTRODUCTORY. 



The species described below as new to science are mostly insects of 

 potential economic importance, as indicated by place of origin and 

 host plants. The facts concerning each of these species in these 

 particulars are given in the notes accompanpng the descriptions. 



Of the seventeen species listed, four are apparently native to this 

 continent, and the rest are foreign. Of the latter, five species have 

 been foimid on living plants recently imported from foreign countries. 

 Two of these, Leucaspis indica and Parlatoria mangiferx, attack 

 mango. The former is established in mango plantings in Florida and 

 Porto Rico, and the latter is found more or less generally infesting 

 the mango nursery stock in the Department greenliouses. A vigor- 

 ous effort is being made to exterminate both of these scale insects. 

 Padatorna pyri infested cuttings of apple and soft pear imported 

 from Manchuria, and might easily become a pest second only to the 

 San Jose scale in importance. All of the infested cuttings were 

 burned, and the entire stock was thoroughly fumigated. Parlatoria 

 cliinensis infested Xantlioxylon, Thuja, and ZizypJius sp. imported 

 from Cliina, and is closeh' related to pyri. Both of these Parla- 

 torias were collected by the writer in China in 1901. Aspidiotiis 

 meyeri infested an Ahies imported from the region of Peking, 

 China. The rest of the foreign material came to the Department 

 for determination from various collectors as dry, dead specimens, 

 and the danger of the introduction of these species is a future one. 

 Of the latter, the ones presenting the greatest danger to this country 

 are Aspidiotus cocotipJiagus, wliich in Cuba infests the cocoanut 

 and trifohate orange, and is doubtless capable of developing a \\dde 

 range of food plants, and Aspidiotus africanus, which is making in 

 South Africa a reputation vevj similar to that of the San Jose scale 

 in this country. 



