April,'22] SASSCER: IMPORTANT NURSERY INSECTS 159 



examined. While these larvae were for the most part in the soil, in 

 some cases they had entered the clumps and occasioned some injury 

 to the roots. In all of the shipments it was evident that an effort had 

 been made to remove the soil, but the small amount remaining was 

 sufficient to protect the larvae and permit them to accompany the 

 plants. While it is true that the insect in question is known to be es- 

 tablished in certain sections of this country, this instance forcibly em- 

 phasizes the possibilities which accompany the introduction of plants 

 imbedded in soil. 



Forty-two shipments of French fruit and rose stocks were found to 

 harbor nests of the Brown Tail Moth in contrast with sixty-three from 

 the same country during the past eight years. Incidentally, a number 

 of these shipments also contained nests of the White Tree Pierid {Aporia 

 crataegi L.). Cne shipment of fruit seedlings from Holland was infested 

 with nests of the Brown Tail Moth and one consignment of quince 

 stock from France contained egg masses of the Gypsy Moth. Larvae 

 of the Sorrel Cutworm {Acronycta rumicis L.) were collected on quince, 

 cherry, and rose; and pupae of the Dagger Moth (Apatela auricoma 

 Fab.) were reported on pear, quince, and rose from France, and cherry 

 from Holland. Narcissus bulbs from Holland were infested with the 

 Lesser Bulb Fly {Eumerus strigatus Falln.); iris from England with 

 Anur aphis tulipae Boyer, and Lilium candidum from France with 

 Cryptothrips dentipes Reut. Egg masses of the European Lackey Moth 

 (Malacosoma neustrta L.) were intercepted on three shipments of French 

 apple seedlings, and cocoons of Emphytus cinctus Linn, were taken on 

 rose stocks from England, Ireland, France, and Holland. 



The Black Fly of Citrus, Aleurocanthus woglumi Ashby, was collected 

 on the foliage of citrus on nine occasions from Cuba and Jamaica, and 

 once on what appeared to be bay from the Bahama Islands. In a 

 majority of these cases, the eggs and pupae were on leaves attached to 

 fruit found in the stores of ships arriving at American ports of entry. 

 A. spiniferus Quaintance also arrived on citrus leaves from Japan. The 

 Mexican Fruit Fly (Anastrepha ludens Loew) was intercepted in 

 mangoes and sweet limes confiscated from immigrants at El Paso, and 

 larvae of A. frater cuius Wied. were found in mangoes and Cuban plums 

 from Cuba, Mexico and Jamaica. The Mediterranean Fruit Fly was 

 taken on five occasions in coffee berries from Hawaii, and what appeared 

 to be larvae of Conotrachelus perseae Barber was located in avocados 

 from Mexico and Costa Rica, as well as a species of Heilipus from Mexico 

 and Stenoma catenifer Walsh from the Canal Zone and Mexico. Mango 

 seed from Hawaii exhibited the Mango Weevil (Sternochetus mangi- 



