378 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



RESULTS OF STATE AND FEDERAL INSPECTION OF IMPORTED PLANTS 



AND PLANT PRODUCTS. 



INSECT PESTS INTERCEPTED. 



As the result of State and Federal inspection, the following pests 

 were intercepted during the year: Egg masses of the gipsy moth on 

 6 different occasions on stock received from Belgium, France, and 

 Japan. Nests of the hrown-tail moth were detected on 6 consign- 

 ments of nursery stock from France. Egg masses of the European 

 tussock moth {Notoloplxus autiqua) have been repeatedly collected 

 on stock from France, Holland, England, and Denmark. Pupa? of 

 the dagger moth (Apatela auricoma) were reported on 12 shipments 

 from Holland. An undescribed potato weevil was collected from 

 Irish potatoes from Peru. This is the fourth potato weevil new to 

 the United States found in potatoes imported from the Andes. 

 The mango weevil (Cryptorhynchus mangiferae) was found in a small 

 shipment of mango seed from Siam. This weevil is recognized as 

 a serious pest to mangoes in many tropical countries. Cocoons of 

 the pine sawfly (Diprion simile), which is an important pine pest 

 in Europe, were detected on pines from Holland. A second sawfly 

 {Emplvytus ductus) was collected on Manetti rose stock on 6 dif- 

 ferent occasions. 



As in previous years, pear seedlings were occasionally found to be 

 infested with the European pear scale (Epidiaspis piricola). 



In addition to the pear scale, the following is a partial list of the 

 more important scale insects collected on imported stock. The 

 numeral following the country of origin indicates the number of 

 times intercepted: 



Aonidia sp. on eondurango pods from Ecuador (1). 



Aspidiotus palmae on coconut from Honduras (1). 



Aspidiotus tsugae on hemlock from Japan (2). 



Ckrysomphalus personatus on orchids from Canal Zone (1). 



Pseudaonidia arliculatus on cinnamon from Jamaica (1); on Pandanus from 



Cuba (1); on Areca sp. from Trinidad (1). 

 Targionia biformis on orchids from Panama (1), Colombia (1), Guatemala (1). 

 Targionia sacchari on sugar cane from Cuba (1), and British West Indies (1). 

 Chionaspis wistaria on wistaria from Japan (1). 

 Lepidosaphcs lasianthi on camellia from Japan (3). 

 Lepidosaphes neusteadii on umbrella pine from Japan (2). 

 Parlatoria cahanthina on olive from Greece (1). 

 Parlatoria chinensis on flowering shrub from China (2). 

 Phenacaspis eugcniae on ornamental plants from China (1). 

 Antonina crawii on bamboo from Japan (2). 

 Astcrolecanium aureum on orchids from Isle of Pines (1). 

 Lecanium bituberculatum on Crataegus oxyacantha from Holland (1). 



In addition to the above, many insects of greater or less importance 

 have been taken on plants of various descriptions. In all, some 193 

 different kinds of insects have been reported on imported stock 

 during the past year. 



DISEASES INTERCEPTED. 



Citrus canker has been found on 8 different lots of citrus and 

 related plants — 1 from the Philippine Islands, 2 from Java, 1 from 

 Singapore, and 4 from Japan. This is apparently the first time 

 that this disease has been reported from Java and Japan. Seven 

 other diseases of more or less importance have been collected on 

 citrus, appearing on 40 different lots of material. Some of these 



