REPORT OF THE SOCIETY 



25 



A FEW NOTES ON THE "PEAR TREE SLUG" ' 

 J. C. Chapais, St. Denis-en-bas 



My aim in writing this paper is to give a better knowledge of the pear 

 slug than many of those who have to suffer from its misdeeds in their 

 orchards generally have of it. 



Let us see, first, what place the pear tree slug occupies in entomo- 

 logical nomenclature: Phylum of Arthropoda, Class of Insecta, Order of 

 Hymenoptera, Family of Tenthredinida, Genus, Tenthredo, Selandria or 

 Eriocampa, Species, Selandria or Eriocampa c^rasi. 



It is the larva of Selandria cerasi that makes havoc of pear, plum and 

 cherry trees in our orchards. As a larva and as an adult insect it is known 

 under many names, and we will give here its various names to prevent con- 

 fusion. 



As a larva we find it called : 



In English 



Cherry Tree Slug 

 Pear Tree Slug 

 Slug Worm of Pear 



In French 



Larve limace 

 Limace du cerisier 

 Ver limace du poirier 



In English: 



Cherry Saw-fly 



As an adult insect it is called 

 In French: 



AUante du cerisier 

 Mouche a scie du cerisier 

 Tenthrede du cerisier 

 Selandrie du cerisier 



In Latin : 



Allantus cerasi 

 Eriocampa cerasi 

 Eriocampa limacina 

 Eriocampoides limacina 

 Selandria atra 

 Selandria cerasi 

 Tenthredo cerasi. 



The pear slug is found on cherry, pear, plum and quince trees in our 

 orchards, and on hawthorn, mountain-ash and sallow in the woods. 



Saunders, in his "Insects injurious to Fruits" gives the following in- 

 formation about this insect: 



"The pear slug passes the winter in the chrysalis state under ground; 



