314 THE CANADIAN ENTOMOLOGIST 



to the European Red Tail, Dasychira piidibunda Linn., which had 

 been bred from pupa collected near Rutherford. This insect is 

 widely distributed in Europe and parts of Asia, and ranks as a 

 first-class pest along with the Gipsy and Brown-tail Moths. 



During June, 1915, a species of Pseudococcus, evidently from 

 Japan, was found doing considerable damage to Taxus sp., origin- 

 ally from that country, and in July, 1915, a mole-cricket,* as yet 

 unidentified but supposedly from Europe, was found in compara- 

 tively large numbers feeding on the roots of various plants. In 

 addition to the above foreign species, Rutherford has also received 

 unwelcome insects from other states, the most important being the 

 Gipsy Moth and the Florida Fern Caterpillar, Callopistria flori- 

 densis Guen. The Gipsy Moth infestation has, of course, been 

 entirely destroyed. 



With one or two exceptions, the above established infestations 

 are light, but it is only a question of time before they will become 

 more troublesome. On account of the similarity between the 

 climate, animals and plants of North America and the northern 

 parts of Europe and Asia, various European pests do very well in 

 this country, especially when allowed to develop unchecked by 

 parasitic enemies and cultural methods. Imported nursery stock 

 is undoubtedly the greatest source of danger, although some 

 species come over in merchandise, or in the packing around mer- 

 chandise, while others are accidental passengers on boats. Many 

 of our now common and destructive pests were imported before 

 quarantine laws and inspection systems were in force. 



The well known San Jose scale is probably a native of central 

 China. The Gipsy Moth, Porthetria dispar Linn, is a serious pest 

 in Europe, and occurs in Asia and northern Africa. The Brown- 

 tail Moth, Euproctis chrysorrhaa Linn., is from central and western 

 Europe. The codling moth, Cydia pomonella Linn., the pear 

 psylla, Psylla pyricola Foerst., the clover leaf weevil, Phytonotnus 

 punctatus Fab., the clover root-borer, Hylastinus obscurus Marsham, 

 the seed corn maggot, Pegomya fusciceps Zeit., the pea moth, 

 Semasia nigricana Steph., the carrot rust fly, Psila rosa Fab., the 

 imported onion maggot, Pegomyia ceparum Bouche., both asparagus 



* This has since been determined by Mr. J. A. G. Rehn as Gryllotalpa 

 gryllotalpa Linn., the European mole-cricket. 



