142 THE CANADIAN ENTOMOLOGIST. 



Phytomyza chrysanthemi Kowarz. (Dip.). In the 1909 list, 

 "Insects of New Jersey," the Chrysanthemum Leaf Miner or 

 Marguerite Fly, as it is also called, is recorded under the genus 

 Napomyza from one locality. As a matter of fact, it is present 

 every year in \arious greenhouses in northern New Jersey and 

 does considerable damage to chrysanthemums. The larvae mine 

 the leaves, and the irregular whitish lines and blotches often take 

 up an entire leaf surface. In addition to this disfigurement of 

 the foliage, the size and number of flowers is often reduced While 

 nicotine solutions are effective against this insect (Sanders, J. G , 

 A Remedy for Chrysanthemum Leaf Miner, Jour. Econ. Ent., 

 vol. \', No. 6, J). 4~2), many greenhouse men persist in using the 

 more or less unsatisfactory method of picking off and destroying 

 infested leaves. 



Oberea tripunctata Swederus. (Coleop.). Every year while 

 inspecting nurseries it is customary to run across the work of the 

 Dogwood twig-girdler. Smith, in "Insects of New Jersey," re- 

 cords it as occurring throughout the state. Its presence is detected 

 by a withering of the leaves at the tip of the infested shoot. While 

 it is undoubtedly widely distributed in New Jersey, it never, as 

 a rule, occurs in sufficient numbers to do any considerable damage. 



Hemichionaspis aspidistra Sign (Homop). In many fern 

 houses in New Jersey this scale insect assumes the importance of 

 a first-class pest It is also being continually introduced into 

 many houses on aspidistra imported from Belgium. As a rule, it 

 is found on the lower leaves of the ferns, and by its spotting in 

 bad infestations often makes the plants more or less unsalable. 

 Unfortunately there is no satisfactory remedy, and the insects 

 are usually got rid of by pulling off and destroying infested 

 leaves during the operation of repotting or turning over the stock. 

 Isosoma orchidearum W^estw. (Hymen.). Known as the Cattleya 

 Fly, this member of the Chalcididcs is an important pest in practic- 

 ally all orchid houses in New Jersey where Cattleya species are 

 grown. The adult deposits one or more eggs in the bud, and 

 development and pupation takes place inside, the bud finally 

 becoming more or less swollen. In some cases I have found as 

 many as six larvae in a single bud. While fumigation with nicotine 

 extracts to kill the adults is recommended as being the most efficient 



